/sci/ - Science & Math

>>11942633
Not wrong, just impractical and can't communicate with your past self so no point. Not gaining any information that isn't already known either.

Imagine doing that. Looking out into the mirror, then coming back 20 years later, a quarter of your life lived, and see yourself looking into that telescope for the first time, a much younger man.

>>11942636
Image running this experiment to do this and everything is aligned and you see your baby self 20 years ago for the first time. Then you come back to watch your favorite memory relived, but the alignment is fucked up and you miss it.

Try to solve why this is not possible if you can. Also don't reason with conservation-of-energy theory. Also don't say that the seal couldn't be ideal becouse it can or at least be so ideal that the generator could use a water pump to replace the small amount of leakage water if this system would otherwise work.

>>11942696
I would guess the balls at some point would reach equilibrium because of the net weight cancelling the buoyant force.

>>11942696
>>11942712
Also the gears have friction. So energy loss there as well.

No really, why doesn't this work?

>>11942724
it does

>>11942724
That's exactly how hot air balloons work.

>>11942724
Because you're a retard who uses hydrogen instead of air

>>11942696
To get the balls to go into the bottom they need to displace their own volume in water which is the same amount of force pushing each to the surface.

>>11942712
>>11942717
Balls are can be regarded as weightless and gears frictionless.
>>11942734
Correct!

>>11942734
>>11942742
So he basically means that the force pushing the balls down when it enters from the bottom, is the same as the force psuhing up?

>>11942757
Yep.

>>11942759
But aren't there more balls in the water, compared to the one lone ball trying to get in? Won't there be an imbalance?

>>11942759
The force on each ball will be equal, right?

>>11942650
Wouldn't work, water's surface tension isn't strong enough.

>>11942765
>>11942768
Not sure about this, any engineers want to spell it out?
My (basic) understanding is work is only being done as the ball emerges so assuming they are perfectly timed to enter and exit at the same time the forces are balanced.
The other balls are just potential energy acting against the potential gravitational energy in the water.

>>11942780
Do you not understand troll physics?

>>11942633
if someone randomly put a mirror 10 lightyears away 9.9 years after you existed at a place in its trajectory, and 10.1 years have passed, and you looked, you wuld see yourself 20 years ago

>>11942791
That would assume you traveled at the speed of light.

>>11942635
You'd actually have to do it to see if it works.
Its not a troll in that sense.

>>11942782
>so assuming they are perfectly timed to enter and exit at the same time
But you assume this taking into consideration the height of the cylinder. This event has very low probability. It also depends on the length of the rope in between each balls as well as the ball's diameter.

You know how Yoda says, "Hard to see, the future is?" Victory face meme is a good example of that. They didn't get it right.

>>11942813
>>11942782
In other words, you assume that this equation holds true
(n-1)d + nL=h
d is the diameter
L is the length of the rope.
n is the number of pieces of rope.
h is the cylinder length.
You have 3 random variables.

Correct me if am wrong tho.

>>11942813
It's the best case senario for the machine, if they aren't in time the emergance isn't producing force when it's needed.

Hang on I think I get it, when you have a hole in the bottom on a fluid filled container like this the pressure is equal to all water in the collum above it. So the entering ball needs to fight the pressure of all that water while the balls on the water are only displacing a tiny amount of the volume.
If I'm right it would take as much force to get the ball in as the boyancy produced by a solid tube the diameter of the ball running the full height of the container.
Even if you had this (which wouldn't cycle) as the ball entered it would push this tube out of the water reducing it's displacement and boyancy.

>>11942831
So, the force that the ball would need to 'exert' is much greater than the buoyant force? In that sense, increasing the Volume, directly increases the force required, hence force required, should be independent of the volume of each ball?

>>11942831
>If I'm right it would take as much force to get the ball in as the boyancy produced by a solid tube the diameter of the ball running the full height of the container.
That is correct. After all, pressure only depends on height and density.

>>11942831
>>11942856
>>diameter of the ball
Small correction: The pressure is independent of it's surface. Meaning it's just the height and for a sphere, a small infinitesimal point is enough to generalize the pressure at each point.

>>11942885
Density of tungsten is more. It'll just sink.

>>11942885
Don't think this counts as troll physics because it would work just fine, sure tungsten is dense as fuck but so long and it displaced more than it's mass in lava it would float like any steel ship.

>>11942719
chair is too light however if you jump off the back of an elephant it works

>>11942897
No.

You need to have at least enough strength to jump half the height from which you fell for this to work. Assuming you can cushion with your legs as much as you can jump with them.

E. G. If you fall from 20 meters, you need to be able to jump 10 meters high on the "elephant" (of infinite weight to make things easier), so that afterwards you can cushion the second half of your fall with equal force.

If you can only jump 1 metre high, then this trick will only work for a two metre fall. Again assuming the thing you are jumping on has infinite mass, else your legs need to move faster which requires more force etc etc.

>>11942890
True. This is why there are no ships made of iron.

>>11942970
>he can't into plyometrics

>>11942719
wouldn't you still die since you are falling so it shouldn't matter if the chair is falling too?

>>11942890
>Build boat made of metal so hull displaces more than its mass in water
>Enjoy your new metal boat
I'm too lazy to mspaint this

>>11942726
>>11942727
Thats the joke

>>11943061
me pointing out that it does work is a play on the joke since its so old

>>11943030
If the "chair" weighed the same amount as you doing this would slow you by half your peak jumping speed, because the chair is going to weigh a lot less than you it's going to be way less than half.
Sure you would slow down but slowing down by ~0.1m/s when you are falling at say ~40m/s isn't going to make much difference.

>>11943030
It would in theory work if you had a massive body, such that the reaction force, overpowers the 'action force'.

>>11942894
it would work but you would melt down lol

>>11942970
>If you can only jump 1 metre high, then this trick will only work for a two metre fall
Easy, just drop a diagonal array of elephants, each one starting 1 meter lower, and time the drops to line up with your jumps.

>>11943082
Are you interested in a research grant?

>>11943061
what joke?

bump

>>11942633
>space is a closed loop
>build infinity telescope that can see infinite distances
>point at random dark patch in the sky
>see light from the milky way that's travelled the full distance of the universe and circle/looped back around
>focus closer into the milky way
>find sol
>find Earth
>see yourself 20 trillion years ago

>>11942696
Balls would degrade/deflate over time. Water would escape over time. There's plenty of problems actually.

>>11943484
based?

>>11943082
Please do this

>>11943012
No idea what that is desu. Also I'm drunk as fuck

>>11942633
Why not just take a photo or a video, this the most retarded thing I ever seen.

>>11943082
based

>>11942633
Couldn't you find out who shot Kennedy with that?
If you found reflective enough surface that's angled towards Earth or is a prefect sphere

>>11942719
You and the chair are both in a falling reference frame. When you try to push against the chair while falling it won't work since there is no normal force to oppose your pushing against the chair. This is the same meme as surviving in a falling elevator.

>>11943082
Second elephant will hit the ground before you have time to jump to it. Grant denied.

>>11945156
>When you try to push against the chair while falling it won't work since there is no normal force to oppose your pushing against the chair.
There is. But the force is much smaller primarily because the mass of a chair is much lesser. Hence the effective reaction force is null.

>>11942650
What's the viscosity of "troll juice"?

>>11945370
1/0 I would assume.

>>11943082
legolas in the hobbit

>>11943484
Am I missing something here?
Grandma + daughter + granddaughter
= 1 grandma, 2 mom, 2 daughter
but the table has 4 legs itself
so the answer is 2+2+2+4 = 10

>>11943076
Aerogel carpet.

>>11945370
Underage faggots aren't welcome here.

>>11945399
really hate how long it took me to figure out the issue, what is wrong with me

>>11945493
You rely on mental math instead of synesthesia based methods

Synesthesia can be learned and is what all great mathmeticians use to calculate internally. Doing math verbally in the mind is slow af

>>11943496
Yes that's how indistry works
Buy metal for $20, turn metal into katana, people like katanas more than metal, sell katana for $50

>>11945242
Can someone explain why this wouldnt work

>>11945819
Who's gonna power the microwave? This is extremely inefficient.

>>11945185
>time the drops to line up with your jumps
>Second elephant will hit the ground before you have time to jump to it.
I’ll have whatever you’re smoking thanks

>>11945819
There is no radiation leaving, so you would rely on, on average, more radiation pressure being exerted in one direction. It's analogous to filling a container of a similar shape, or any shape, with an (ideal) gas at non-zero temperature. That also wouldn't move in a preferred direction if you just let it sit around. If you open one end, then you can get thrust but lose energy, which has to be resupplied as >>11945841
said.

>>11942636

I mentioned an idea I had almost exactly like this to my friends in high school, an they thought I was an idiot.
This would work if you could create enough force to lift yourself mid air right?

>>11945388
You’re forgetting the 1 granddaughter
There’s 6 people, 6*2=12, then add the table’s 4 legs

>>11945990
Yeah.....kind of. One way of thinking is, imagine a long rod. You throw it in any direction. If you wantto move, you'll have to hold on to the rod. But the acceleration aka the force will only propel you forward during the phase of throwing the rod. Once thrown, whatever you do, you cannot accelerate, in the sense you will be a free falling body, whose applying force on itself. There is no reaction force.
It does work in rockets because the gasses provide the reaction force necessary to accelerate it upwards.

>>11945388
>>11946020
the answer to this would depend on what you consider legs tho.

>>11945990
>>11946021(2/2)
It's the same as punching thin air.

>>11946021
like pushing off on a skateboard then standing on it till it comes to a stop
obviously more force is needed to lift off the ground
id imagine the most likely way of trying this is swinging a heavy baseball bat or hammer throw type deal

>>11946128
Obviously. Although you'll have a tough time trying to align yourself, mostly because you have no way to generate horizontal pressure and lift. I would still imagine the force to be very large. It all depends upon your mass and the distance.

>>11946139
Nice berger math.

>>11946401
kek

>>11946454
fix thumbnail

>>11946464
My retarded self saved the thumbnail rather than the image.

>>11945493
same

>>11945504
>>>/x/

>>11945819
Assuming >>11945862 is wrong, it's because by shooting the particles forward, yuo're pushing yourself back with the same force that would be pushing against the sail. Think of it like holding a garden hose that's on full blast and shooting that at a sail. If it pushes your hand back but you hold it still, then it would push the entire system back (effectively rolling your wheels backwards)

>>11945399

>>11945570
Thanks for the explanation m8

>>11946854
>Geothermal energy fakenews.
No way it can work

First best Trollo. I took this to an actual physics site and they could not explain what was going on.

>>11943515
Nothing what good engineering wouldn't solve if this system would actually generate more energy than initial setting.

The real problem is that when the ball is coming from the seal, the pressure does exactly the same work against it in lenght of that ball's size compared to the work the buyoancy does to the ball all the trip from bottom to surface.

So this system could only keep going for ever in ideal setting but wouldn't generate more energy than initial energy.

You can calculate this yourself if you are familiar with the law of pressure= liquid density*gravity acceleration*depth and have some university level applied integration skills.

water density=1000 kg/m^3 ||numerical value unneeded as this wont work with any liquid
gravity acceleration=9.81 m/s^2 ||numerical value unneeded as this wont work with any gravity

So pressure=k*depth, where k is constant. But you might find this helpful

https://en.wikipedia.org/wiki/Spherical_coordinate_system#Integration_and_differentiation_in_spherical_coordinates

>>11946919
Isn’t it something about the summation of a series not being a member of the series?

>>11942899
Lol https://youtu.be/MS2aEfbEi7s

>>11942633
Wouldn't work. Light would disperse enough to not be enough to see on its way back.

>>11947080
Just un disperse it, fucking idiot

>>11947037
No, not at all.

>>11947125
Found it. The limit of a sequence isn't necessarily a member of that sequence.

>>11947128
That's a true fact but has literally nothing to do with the image.

>>11945493
Can somebody explain this?

>>11946551
>Assuming >>11945862 (You) is wrong
How does my post contradict yours? You just described the second scenario. Notice that the cavity is closed in the doodle.

>>11947159
>Person A
-$20 Initial Investment in box
+$30 Sale of Box
[$10 Profit]

>Person B
-$20 Investment in Box
-$30 Purchase of Box
+$40 Money from Box
[-$10 Loss]

>>11947159
>person A pays 20
>person B pays 20
>B buys box for 30
>but they already paid 20 making their total 50
It just transfers $10 from B to A each time you do it.

>>11947175
>>11947176
Damn I missed that somehow

>>11946882why doesn't this work?

>>11947166
I was assuming the particles were being shot in one direction at a sail (pic is hard to understand, still not sure exactly what it's trying to say)

>>11947192
Because the magnet chain is loose. Notice the droopy catenary curves, time for a tune up.

>>11942633
I am so stupid I don't understand why this wouldn't work, or even how it is meant to be a joke assuming that it would.

>>11942885
How dense is the molten material?

>>11947207
Three reasons it wouldn't work.
1) Space dust isn't super rare
2)The brightness of the events happening on earth is entirely insignificant compared to the Sun/Earth/Any other star. It would be washed out completely.
3)You would only be able to see the year 2000 if a mirror was slotted in right now. However you'd have to travel there to set it up and travel back which would take time.

4)Actually one more. A standard mirror is no where near reflective enough

>>11947215
~1/4 the density of tungston but that only matters if you are trying to float a soild block, if you shape it like a boat to displace more volume it'll float fine.

>>11942633
If you built the mirror on Earth, you would need to travel faster than light to get it into position. If there were already someone 10 ly away, you would need to send information faster than light to tell them to build it.
Even if you could make the mirror materialize 10 ly away instantly, the light from yourself 20 years ago would already be 20 ly away from you (i.e. 10 ly behind the mirror) and thus wouldn't be reflected. You wouldn't see the mirror itself for 10 years after it was built, since its light would take that long to reach you. When it finally did, you would see yourself from 10 years before it was built (or 20 years before the present).
If you wanted to see yourself from 20 years ago, you'd need to build the mirror 20 ly away and wait 20 years for the light to get back. But my point at the beginning still stands: the light emitted by you from the past is traveling away from you too fast to catch up with without violating causality.
However, all of this assumes that space is 100% vacuum, which it isn't, so the light is really traveling ever-so-slightly slower than c. If you could create something that is able to travel through space just barely faster than your own light (but still slower than c), it would take thousands of years to catch up (at least) and the same amount of time for the light, once intercepted and reflected, to come back to Earth. By then, any trace of your existence would be wiped off the face of the Earth.
When astronomers looked into the night sky millennia into the future, this massive project forgotten, they would be shocked to find a blue marble just like ours. As they looked closer, though, they would notice something different. Their sun has no Dyson sphere. Their atmospheric CO2 is far higher. The people are all so very confused. Zooming in, they would see someone lost to time, sitting at a screen from an ancient piece of technology, making a 4chan thread about troll physics.
And they would say, "What a faggot."

>>11945493
me too, alternated for five mins between feeling like turbo brainlet and laughing hysterically
t. physics graduate

>>11947337
Based anon. When can i give you a fields medal?

>>11947337
(1/n)sinx = ?
I might write 6 as well.
The find x one on the triangle made me chuckle though.

>>11947375
>The find x one on the triangle made me chuckle though.
That's an ancient joke tho?

>>11947337
>>11947375
The best by far is treating 8 as 00

>>11946401
Hehe shaft in cat bum

>>11945249
soulless

>>11945249
i dont get it

>>11947629
https://www.youtube.com/watch?v=qFn-C7aXNN0

>>11942633
That's just an incredible impractical way to view an analog recording stream.

>>11946919
It doesn't matter that you repeat to infinity, it's still not a circle.

>>11947337
This is what happens when you give a JavaScript interpreter math problems.

>>11946560
You're welcome

>>11942719
This is kinda how the moon lander landed on the moon. Except the chair was just a lot of gas.

>>11945570
What about labor costs?
Time is money

>>11948405
You would want to set the price higher than the labor costs. So let's say you hire a teenager to build katanas from the metal you buy for $10 dollars per katana
Then you would still be making a $20 profit from selling the katanas for $50.

>>11943484
>>11945388

the question is ambiguous.

every female is also daughter, a granddaughter, a great grand daughter and so on but not every female is mother or a grandmother and so on.

the requirement of 1 granddaughter is incompatible with the requirement of 2 mothers as those two mothers will also qualify as 2 granddaughters.

since we are working off a false premise then the answer can be anything.

if you assume that the requirement is not for exact numbers, that there is 'atleast' 2 mothers .etc, then you can solve the puzzle by giving a sufficiently large even number as the answer.

>>11942719
doesn't this technically work as long you eject the chair fast enough so that your momentum is zero.
Assuming 5 kg chair and a 75 kg human falling at a speed of 40 m/s if you kick off the chair in such a way that the chairs is traveling away from you at 640 m/s you should be momentarily motionless.

>>11946919
>>11948203
Proof that 0.999... does not equal 1

>>11943515
>>11942717
fuck off with these "muh energy loss due to imperfections" bullshit non-responses

>>11946919
convergence of functions, even uniform, doesn't imply convergence of derivatives. the picture is an example of this phenomenom.

>>11948203
>>11949205
>>11947037
>>11947128
no.

>>11949201
There are exactly 2 ways in which this could work.
1) The chair's mass is much much larger than the human. This would in turn give a string enough reaction force.
2) As you said, if the guy throws it with a good enough speed, he could land safely.

The second one is obviously not feasible, as it rests on the assumption that humans have superior strength, which is demonstrably false.

The first seems more likely. Although, where could one get such a large mass precludes the first option.

>>11949254
>no
Wrong, retard.

>>11944517
no, you cant move faster than light so the opportunity is already lost.

>>11949169

>>11943496
And then the electricity bill arrives...

>>11949268

>>11946919
Do the same from the inside of the circle, then take the average of the two results.

>>11943449
kek

>>11942899
Hello, based department?

>>11942696
mfw this was my university interview question and I fumbled it

>>11946888
Why doesnt this work?

>>11943484
>>11949169
>if you assume that the requirement is not for exact numbers, that there is 'atleast' 2 mothers .etc, then you can solve the puzzle by giving a sufficiently large even number as the answer.

While the problem is indeed not well worded, if we work under the assumption that it has a unique answer as all valid puzzles should, we reach the conclusion that it must be asking for the least amount of people needed to be present so as the requirements correctly proposed by you are satisfied.

The answer then can only be one, that there are at least three females present, a grandmother, her daughter and her granddaughter. This gives at least 6 legs, but there is further ambiguity on whether the legs of the table should be counted or not.

Furthermore we do not know if all of the legs of the people present are located under the table or not and if the legs of the table are under the table too, information crucial to the answer but unfortunately not provided. Moreover, depending on the meaning of "sitting" there could also be requiremnts for chairs which would increase the least number of legs under the table.

So in conclusion there is not enough information given to determine the least amount of legs under the table, neither can we be certain of some lower bound for it, other than the obvious, that there are at least 0 legs under the table.

>>11947699
He's a creationist dumb enough to believe he isn't the retard.

>>11946020
1 of the daughters is also a granddaughter

>>11950598
Every female is a granddaughter.

>>11942696
While it would have enough energy to maintain it's movement it's output would only be strong enough to move the balls. Adding a generator disrupts it's equilibrium so there is less work put out than work put in

>>11945504
Explain.

....0000.0000000000....
Infinite both directions
How can something that's equal to nothing have an infinite amount of information while also simultaneously being nothing?

>>11950736
....00000.0000000...........
is itself information. That isn't a value. It's more like a statement.
0000.00000000000... when evaluated is 0.

>>11950618
true but not all are mothers/grandmothers

>>11942724
Dumbest one yet.

(Also my favorite troll physics comic)

>>11942724
trololo
made me reply

>>11946401
saw an advert like that once

>>11946139
based

>>11942899
oh this is glorious

>>11945399
I don't see how this can be thought of any way other than instantly being wrong. They both start out at -$20 by putting money in, totaling to -$40. The right guy then gains $30 while the left guy loses $30. This comes out to the guy on the left now at -$50 and the guy on the right at +$10, add them up and you have what you started with, -$40

On top of this, the reader *knows* this to be a troll, yet is somehow talked into being confused about how it's actually false. What math would these people be using?

>>11942712
>>11942717
>>11942734
>>11943515
>>11950649
wrongest

>>11942696
The force on the ball at the seal is the weight of the entire column of water above the ball It doesn't matter that there are balls there because fluids don't give a fuck.

Lets assume the balls are mass-less.

[math] F_S = \pi g \rho h r^2 [/math]

The buoyant force is the number of balls times their individual forces.

[math] F_b = N * {4 \over 3} \pi g \rho r^3 [/math]

Ah, you say... What if I increase the number of balls.

But you can only increase them until [math] N = h \over 2 r [/math] and the balls become taller than the height of the basin and either slack or pile up at the top and don't provide force.

Meaning the max buoyant force is [math] F_b = ( h \over 2 r ) * {4 \over 3} \pi g \rho hr^2
[/math]
or

[math]F_b = {2 \over 3} \pi g \rho h r^2 [/math]

Notice [math] F_B = 2/3 F_S [/math] in other words it goes the opposite direction.

>>11951909
And I wonder why I failed my physics and math exam.

>>11950920
also true

>>11949603
basically when you lift something with something else it generates an equal and opposite "lift" on the thing that is lifting initially
so both forklifts "lift" down towards the ground as much as they lift up away from the ground
assuming both forklifts are equally powerful they would both lift each other away from the ground and push down towards the ground equally and so nobody would go anywhere

>>11942678
>Troll science
>Posting a thumbnail
Bravo.

>>11942724
I love those what pretend real stuff is troll science the most

>>11943484
>>11945388
1 grandma, 1 mom, 1 daughter
3*4 + 4 = 16

theres only 1 mom because the grandma is a mom as well, so 2 moms is actually 1 grandma + 1 mom. the mom is also a daughter so 2 daughters goes to one granddaughter and one mom.

heres the different properties each one has
grandma: grandma, mother
mom: mother, daughter
granddaughter: daughter

>>11953456
based 500iq troll

>>11943082
kek

>>11942696
It's simple if you think about it in terms of pressures. The balls require an amount of energy to be forced into the water which is equal to the energy gained by the ball as it is pushed up due to bouyency

>>11953731
no need to travel for that, just set clock forward or backward to the timezone you need

>>11942633

>>11943082
t. Super Mario

>>11942818
How much time does Tooker waste on here? Goddamnit, how do you even get money to survive if you spend your time on /sci/ all day?

>>11943449
I still don't get what the problem is. It's just a fucking helicopter

>>11943496
New startup idea

>>11953832
Those are called low tier trolls.

>>11945264
NASA would like to offer you a position

>>11946919
It's the same thing as trying to approximate a triangle with a staircase.

>>11948207
This literally made me LOL

>>11947629
I don't see the problem? You're just gaining a lot of potential energy and converting it to a lot of kinetic energy by jumping. You'd probably fall into a less favorable direction though

>>11947967
Fuck, I can't find the problem with this

>>11953908
because you’d fall vertically not horizontally

>>11953929
>You'd probably fall into a less favorable direction though
Just what I said.

>>11953935
>>11953908
>I don't see the problem?

>>11953911
The north magnet at the bottom holds it in place, since the others are too far away to over power it?

>>11946919

>>11953979
shut up tooker

>>11953979
Not an argument. The method works for approximating the area of the circle.

>>11953979
look at his nose

>>11953832
You have actual diagnosed autism, don't ya?

>>11954030
no bully pls

>>11953903
speed of light wagon will always be my favorite.
it's just so simple and elegant.

>>11954036
autist freak is crying
good

I can't be bothered drawing this because I'm using Ubuntu but why can't this work?

>First panel
>Trollface lifting weights
>second panel
>I want to save money from a gym membership
>third panel
>simply push a wall as hard as you can
>guaranteed to use your maximum potential because you'll never be strong enough to move the wall
>can workout both legs and arms
>fourth panel
>get really strong without paying for gym membership
>Problem, gym owners?

>>11946919
This sets 4 as an upper bound for pi. Try it inside the circle now and you get a lower bound.

>>11954147
ahah thats a good one
like if perpetual motion existed lamo

>>11943496
>buy cheap shoe
>put Nike (TM) symbol on it
>price quadruples

>>11954351
it totally works, it's called standing push-ups

>>11954351
gimp m8

>>11953985
That's not Tooker that's Wildberger

>>11954572
damn, their art style is so similar i messed it up

>>11942635
Is wrong, attenuation means that you cannot image small objects that are very far away.

>>11942885
Works just fine, only concern is not cooking yourself.

>>11951909
Correction, I forgot that the \over does what it do in the way that it did.

Max number of balls [math] N_{max} = {h \over 2r} [/math]

and

[math] F_b = ({h \over 2r}) * {4 \over 3} \pi g \rho h r^2 [/math]

>>11955266
wait r^3

>>11954351
/fit/ here, by training your muscles with isometrics only like that, you would only build a fraction of the strength and muscle that you could have. Training each muscle in its full range of motion is important so that the muscle is strong in ALL parts of the movement arc (not just strong at the point where you have been training it to push on the wall). It would be like only training your quads to flex so that your leg is fully straight, but if you were to kick a football, your leg would be weak in the entire extension of the leg and only strong when your leg is straightened. Full range of motion is also important because when the muscle stretches under a large amount of stress in the eccentric portion of a movement, microtears are formed in the muscle which are integral to muscle growth, but there isnt much tearing when the muscle is only contracted in one place. People usually only train these isometric exercises for building strength in a certain portion of a lift that they are weak in as sort of supplementation exercises, but they arent really ideal for hypertrophy. You would still build an okayish amount of muscle, just a lot slower and a lot less than you could have.

It wouldnt be optimal to train all muscles with one movement so that could lead to muscle imbalances with some muscles being much stronger than others and also it would be difficult to train some muscles that need specific movements other than just basic pushing/pulling .

>>11955658
just flex more or less the arms. Iso work at every angle

>>11946401
Why not make a cube of buttered toast instead?
Cheaper, less poo, less vomit, less corpse stink.

>>11954487
based.

>>11942633
I found these creative but never really funny tbqh

>>11942696
Should work imo but that seal better be good.
>>11953735
Yes but there's multiple balls moving upwards at the same time

>>11955658
This is 90% bro science and not understanding how isometrics actually work.

>>11954487
Wait guys, why wouldnt this work?

>>11947967
If the laws of physics allowed for monopoles yes this would work

>>11955833
This would work if the entire earth were to suddenly accelerate with the speed of your arm and fist. It won't though.

>>11949265
No matter how large the mass, no normal human would be able to jump hard enough to survive a drop from a building. Just look at that episode of the mythbusters where they tested if you could survive a falling elevator if you jumped right at the bottom.

>>11956004
In reality, the guy wouldn't survive any situation. But the first option is feasible. Second isn't because no human is strong enough.

>>11943484
8

>>11951638
It's because they forgot the initial information when presented with a calculation while doing it in their head. If they wrote it down I doubt they would be fooled.

So it becomes:
-20 + 30 = +$10 profit A
-30 + 40 = +$10 profit B

>>11955978
lel

>>11955833
little bone no can smash big rock
big rock smash bone

>>11946888
I drew this back in 2010 and this is the first time I've ever seen it reposted. Holy moley

>>11954486
>Generater
cherry on top

cover yourself in piss

>>11953584
>3*4
Humans have 2 legs, not 4

>>11956223
Done. What's step 2?

>>11956197
Files say last modification date 2011.
Creation date is more recent, probably when I moved the files around.

>>11956266
I don't know what to say, I'm not even sure how I fucked that up...

3*2 + 4 = 10 is the actual answer then

>>11945570
*teleports behind your back*
you're right

>>11957728
that's so unrealistic, we can't make rope that long

>>11955833
because the earth doesn't move with the punch

>>11957728
it works if you attach enough leakproof helium balloons

>>11955850
How about this then?

>>11958140
kek

>>11947967
>>11958140
btw, I (>>11953911) think I found the solution (at least for the free rotation): Obviously, this machine does not generate any momentum but only angular momentum, However, the big magnet rotates too, in the opposite direction, thus not generating any total angular momentum.
I don't know about energy though... and wouldn't this generate an electric current? (since we have a rotating magnet)

>>11958140
North pole would still affect the smaller magnets going around and it would stop moving. Just because its faced away doesnt mean the magnetic field doesnt have any influence there

>>11954487

>>11953803
holy shit i remember this thread. based smoothbrain

bump

>>11946530
Retard its basic logic
Using the brains direct computation how the fuck you think visual system works nigger?
If you could tap into that, oh right you can, for example calculation of angles is just one. Youre turning a visual quality into a quantity of accurate measure at least for 90, 45 degree angles

Literally just

>>11959872
>>>/x/
You simply must go back

>>11942885

Tungsten quickly heats up to same temperature as lava.
Kills OP.
But OP wasn't killed by LAVA, so win!

>>11942635
>Not wrong
yeah it is, the mirror would have had to have been built before you were born, or else the light emanated from you 20 years ago would beat you to the spot where you put the mirror and already pass it by. You'd have to wait 20 years just to see yourself right after the mirror was built.

>>11946878
>
Link 3 engines together! 150% efficient.
INFINITE ENERGY!

>>11946919
Perimeter functional is not continuous ... cuz ... derivative is unbounded operator or something.

>>11960929
Well over 20 unless the mirror is travelling at c.

>>11961009
Well you could use EM drives to have infinite energy and be able to accelerate to c easily. Though even then I guess it would take you 20 years minimum to get there and back assuming you could not only accelerate to lightspeed but do so instantly... Oh wait I figured it out:
>travel 10 years
>place mirror
>travel 10 years back to Earth
>light you emanate halfway through return journey takes 5 years to reach mirror, another 10 to bounce back
>get back to earth, wait 5 years, then see yourself 15 years ago
u mad, physicists?

>wind a large coil of wire
>put it next to a substation
>free energy
problem?

>>11942719
Reach terminal velocity of 180mph. This should work if you can jump up at 180mph

>>11943484
This only works if the grandma is eve's daughter

>>11961280
The thing about that is that if you imparted enough force onto the chair to "stop" your velocity, it would be no different than hitting the ground

>>11961466
not if you had sufficiently tolerant jerk dampening springs in your shoes

>>11961194
based

>>11954482
Can't just buy a car instead of build one?

>>11949106
Helium is expensive. The amount needed to float an apple would cost more than the amount of money they would give you for a negative weight apple.

>>11958223
the north pole is further away so yes it will exert reduced force

>>11963288
You can reuse the helium

>>11953456
You'd just have to wait around for 10^10^10^10^10^1.1 years no biggie

>>11954474
bayblade let er riip

>>11945242
>the creation of the EmDrive

>>11947629
basically a space elevator

>>11968674
You mean this? >>11953803

>>11942633
best

>>11958140

>>11963258
That's the real troll.

>>11946556
based
>>11970400
true
fucking magnets
fucking equilibriums

>>11946892
How many layers of irony?

>>11972341
>fucking magnets
How do they work?

>>11972896
5 quintillion but I suspect I'm in a recursive loop.

>>11954351
>I can't be bothered drawing this because I'm using Ubuntu
Stupid fucking linux user

>>11949106
Lol why buy the apple first

>>11945370
About 5,930,000 results (0.69 seconds)
Search Results
Image of troll juice
Image of troll juice
Image of troll juice
Image of troll juice
More images
Troll Juice
Featured snippet from the web
Troll Juice is an unfiltered, IPA brewed with an ancient Norweigan yeast strain called Kveik (pronounced "Kwike"). This strain produces bold citrus peel esters, which are accentuated by the massive amounts of Galaxy hops used to dry hop this beer.

Kveik IPA Troll Juice - Parallel 49 Brewingparallel49brewing.com beers
Feedback
Web results

Troll Juice | Parallel 49 Brewing Company | BeerAdvocatewww.beeradvocate.com beer profile
Troll Juice is a IPA - Imperial style beer brewed by Parallel 49 Brewing Company in

>>11974862

>>11974870

>>11974879

>>11974884

>>11945990
Legs are pushing down with thre force you are lifting up.

>>11974870
based tesla

>>11947044
Thank you for showing me this, anon. Now I'm binging Abbott & Costello. You've expanded my world

>>11975360
huh?

>>11975426
Immovable object vs unstoppable force, because diamonds can't stop diamonds, apparently.

Pretty retarded troll

>>11975503
i c

>>11946919
doesn't account for curvature, its still a square

>>11953986
only because you don't care about curvature for area in this case, apply this logic to surface integrals and you get the same issue

>>11974879
There's a joke of Gaston Lagaffe based on this and his infamous car.
It end up with the roof breaking and flying off by itself with the poor fool who grabbed it.

Mind puzzle for (You)

>>11976633
Gay. Kys faggot

Thanks for the good thread bois

>>11976633
This is a tumor, please never come back to the internet.