/sci/ - Science & Math

forces balance out in these kind of things. no energy is produced.

1. You need an amount of force to push the balloon into the water at the bottom.

2. The water would just pour out. Seriously, whoever thinks this will work is a dumbass who spent too much time theorizing and too little time actually testing things out.

I speculate that it would just stand still. That's by no means from a scientific point of view. I'm a fking biologist, I don't know shit about this.

>>3257777

stop pretending like you know anything science-related.

The balls would leave with water on them.

>>3257814
check my fucking quads, double nigger.

(USER WAS BANNED FOR THIS POST)

>>3257761
The way this thing is constructed, the water would pour out the minute the first floater left the hole.

Still, one thing: buoyancy will be countered by drag after a while.

>>3257814
lol i made that picture but it's not really 0
it would always be some negative value due to entropy
also googled "buoyancy" because my spelling is shit

>>3257841
oh you made it?
thanks very much, ive used it quite alot (every single time i see this thread come up, to be exact)

>>3257761
Bouyancy happens because of hydrostatic pressure. when the ball enters at the bottom, the pressure on the bottom ball is greater in the water than it is in the air, thus it requires work to push the ball into the water from the bottom. This is the same amount of work you'd get out if there was no friction in the fluid and you let the ball go from the bottom of the pool. Thus no net work done.

you're welcome eEK

>>3257828
reported for racism

lolmods

1faggot down infinite more religonvsscience/homework thread starters to go ...

>>3257828
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>>3257828

How has nobody noticed this yet?

>>3260207
We noticed.

it's not worthy of comment.

>>3257777
This is actually right. If the baloons were less dense than the water (assuming they were floating up) means that that whole volume of water can simply reverse the rotation of the whole thing and pour out

..i think


>>3257828
lolololololololol

Thankyou mods

>>3257828
I smiled a little.

>>3257841
wtf was i talking about... forces are 0
energy is negative...

it takes energy for each ball to break the surface tension of water no matter if it is entering at the top or bottom

>>3257828

For reals?

>>3257828


Mods are definitely not faggots.

>>3260248

Yes

EK got banned? Serves her right for being racist.

Well, you see, the easiest way to realise why this doesn't work is to look at what is actually done when the balls enter the water.
When they do, they need to make room for themselves in that water, they do this by pushing the water away. This water has no way to go but up, where there is also water that needs to be pushed up, and so on so essentially by pushing a ball in, you're spending energy that would bring a ball-sized amount of water all the way to the top.

Buoyancy is provided by the water wanting to go down (more so than the balls). So you'd just be bringing the same ballsized amount of water down again. This is not going to net you more energy, than it costed to bring that same water up.

>>3257761

because you eat then poo

energy goes in, energy comes out. You can't alter that.

>>3257761
These thought experiments are sometimes very interesting especially if relativity, expansion of space etc. is involved. Try making one with these.
Say:
Something that makes use of expansion of space - a switchable spring is made up from LC circuits with extremely high L and C. Therefore the oscillation frequency is very low.
Let's assume we start with Charged capacitor:

Step1: E_electric -> E_magnetic LC's are moving further away due to expanding universe (much in the same way as galaxies do). Low magnetic field is building up.

Step2: E_magnetic -> E_electric
Magnetic field induced causes the LC's to get closer to each other due to mutual influence of magnetic fields and electric currents. Thus causing the LC's to move and "gain" kinetic energy that is further on somehow utilised (they collide -> produce heat -> generate more electricity to supply LC circuits). Magnetic field is decreasing.

Why wouldn't this generate energy? (my personal guess is because as the LC's push closer back EMF will "swamp" part of the current in the inductors hence causing loss in current so in fact it will transform part of the magnetic energy into kinetic).

Notation: Electric energy = energy of charged capacitor, "magnetic energy" = energy of energized inductor.

Or make up something like this. And I assure it will make much more intriguing conversation. - If anyone joins the conversation.

http://en.wikipedia.org/wiki/First_law_of_thermodynamics

also >>3257828
pic related

Nobody seems at all upset that EK was banned. I wonder if she will be annoyed when she finds out that nobody likes her.

>>3257761
>i know there needs to be energy to push the balls into the water

So what's the question, then?

The amount of force needed to push the ball underwater at that depth is equal to the maximum theoretical force of buoyancy for the submerged balls, specifically equal to the weight of a column of water with a height equal to the depth and a cross section equal to the hole you're forcing it through. Changing the depth, number of balls, or density of either balls or fluid doesn't change that at all.

>>3257828
That's not racism at all. Using the word nigger is by no means an indicator of racism, blacks use it all the time. However, EK caring she got quads and her being EK in general might justify the ban.

>>3260753
Please what is meant by the word "quads" in this case? I know quad is something multiplied by 4 but I guess in this case there is a different meaning to it.

>>3260753
She should not have said it. That word is incredibly offensive to black people.
>>3260770
She had four sevens as the last digits of her post.

>>3260687

>>3260608
this.

I'm surprised it took so long for someone to post this

crafty usage of gravity anyone?
think outside the box.

>>3257761
How do you make so the water stick in the tank at the bottom and doesn't flow out? .... whatever mecanism you chose, you'l need extra energy there.... then you have to defeat the liquid's viscosity at the enter of it and at the exit of it.

>>3260775
Words are only offensive if you believe them to be so.

This, and many other problems in the world today would be nonexistent if people would just shut up and deal with it. It doesn't affect you, so stop bitching about it, you're only making shit worse.

Polite sage for off topic post.

>>3260883
Words are expressions of deepest ideas.

Think more please.

>>3257828
I love you, mods.
I'm a dude, but I would still suck your cock

>>3260893
And why should you care about other people's ideas?

If someone expresses their hatred for black people by using the word "nigger", and you ignore it, they'll have achieved nothing. If you get all shitty about it, of course they're going to keep doing shit they see annoys you.

Hell, you even see this with things like online abuse. It usually starts out with a few abusive messages from people, and shit escalates as soon as the targets respond and start telling people to stop.

Getting all annoyed because someone uses a word you don't like (or rather, SHOWING that you're annoyed) is retarded. Just keep your displeasure to yourself.

>>3260916
>implying it's not an auto 'keep /new/ out of /sci/ ban'

>>3260883
No. The world would be better if everyone was polite to each other.

>>3260916
EK is a girl.

The force youd have to push the balls at the bottom into the water is larger than the force the balls get from floating up.

It would in other words stand still

the obvious solution to make this design work is to drop all the extra bubbles except for 1, put the bubble inside the liquid, seal the container, and somehow flip the container every time the bubble reaches the top.

1st law of thermodynamics. 'Nuff said.

>>3260104
>>3260323
>>3260770
>summer

>>3261001
>implying double nigger is a /new/ term

>>3257828
Justice has come.

Still, she will come back like alqays.

>>3257761
The amount of energy to push the ball into the water at the bottom is the same amount of energy you get from the ball floating up. To make this more obvious, imagine not individual balls, but a hose that wraps all the way around.