/sci/ - Science & Math

>>1463411
Enjoy re-entry burns.

only problem is that when you jump, you're still rotating with the earth

>>1463411
you are going to have to counteract all the inertia that the earth gave you....

There are so many things wrong with your idea. Noone here is gonna waist their time telling you everything wrong with it.

Your idea is bad and you should feel bad.

>>1463411
Conservation of angular momentum makes the world go 'round.

>>1463438
0/10

>>1463430
Well i think i'd be wearing like a spacesuit or something for the friction

>>1463445
>waist

My idea is great and I feel great about it. I don't see why people weren't doing this with hot air balloons

>>1463461
> I don't see why people weren't doing this with hot air balloons

myface.jpg

>>1463423
yeah but once i am outside of the Earth's orbit then i won't be subjected to Earth's gravitational pull so it will be moving underneath me and I won't be going with it

Sounds like an English major should make use of his/her skills by reading a physics text.

>>1463472
I already read Stephen Hawking's "A Brief History of Time" so I think I have a good enough grasp of physics to comment on it

>>1463445
>waist

Shut the fuck up.

>won't be subjected to Earth's gravitational pull

Hey OP, what happens when you drop a pen on the moon?

>>1463489
the whole universe isnt subject to the globes gravitational pull dipshit otherwise wed be getting hit by asteroids 24/7

summerfaggots and their reaction images....

>>1463501
Please tell me you are being sarcastic, i beg you to tell me you are sarcastic. if you arent get the fuck out and learn physics

>>1463498
The moon doesn't have air so it floats away.

>>1463498
Don't insult me with your retarded questions you stupid aspie engineer

>>1463498
Well it floats away of course!

2/10

Give yourself a name OP so we know who you are.

>>1463501
We are bombarded by asteroids 24/7....

>>1463516
That is not OP nobody is that stupid

>>1463518
another fart commander nice post

>>1463519
Complaining that people are being sarcastic doesn't give you the right to post gibberish

>>1463530
Yeah but you're over-exaggerating our planet's magnetic pull, otherwise we'd be totally unable to leave the atmosphere

>>1463501
lrn 2 Newton's law of universal gravitation

Yes but travelling from LA to DC now takes 21 hours. Your method of travel is shit.

>>1463560
physics major here, that law doesn't work the way you think it does

>>1463553
I was sure we were talking about gravity ITT

>>1463563
Think for a second: if California was 3 hours behind DC, and you stayed in one place for 3 hours, then time would have caught up with you because the earth has been rotating for that long. You are confused about which direction that the earth rotates; i got it backwards too at first, don't worry.

pffffffffffff Space Elevators are more likely to happen then this crap.

Do English majors like have no sense of reality....like a Dexter's Laboratory/Johnny Test cartoon

>outside of the Earth's orbit then i won't be subjected to Earth's gravitational

this is your face, am I right?

>>1463581
>Do English majors like have no sense of reality
We like have a way greater grasp on the abstract concepts of reality than you ever will

>>1463594
i don't think anyone's face looks like that wtf is wrong with you

The sad thing is that OP is right about everything except the time required.Once he's off the ground he'll start to lose the momentum that the earth's rotation provided because the air is poorer at maintaining it. Any time you jump into the air you land a tiny bit east of where you should have. The longer he spends off the ground the further east he'll go... RELATIVE TO WHERE HE WOULD HAVE ENDED UP BASED ON EXTANT WIND CURRENTS/MOTIVE POWER/ETC.

He doesn't get to travel as fast as the earth turns (700 miles per hour at American latitudes). That's 1000 feet per second. So if what he's proposing worked, jumping into the air for half a second would propel you 500 feet. Not bloody likely.

>>1463600

Please stop trolling, this board deserves more respect.

>>1463602
If I jumped up into the air for half a second, it would not be possible for me escape earth's gravitational pull in that amount of time unless i jumped unbelieveably fast.

What makes my method efficient is that I am sitting in space expending no energy while the earth rotates beneath me. I also think you got the earth's rotation backwards like that other guy in the thread

Because when you jump, Newton's first law suddenly disappears. Makes perfect sense, OP.

>>1463620
Laws of gravity don't apply in space where there is no gravity

that's the point of leaving earth's orbit

>>1463628
I won't even bother.

>>1463634
It's okay, I know these abstract concepts can often confuse you hard science majors

>>1463618
The moon isn't far enough away to escape the earth's gravitational pull. That's why it orbits. So if we assume that's the outer limit of the earth's influence, you'd need to jump at least 400,000km upwards in order to escape it.

It would be easier to jump the 4000km between LA and DC.

>>1463628

I'm wondering if I should even bother with your stupidity

>>1463647
Yeah but the moon is too far away; that's why it takes the moon around 24 days to make a full rotation around the earth. I only want to be at distance from earth that would require 24 -hours- to go around

>English major
lrn2momentum

OP, why do you think this phenomenon doesn't happen with helicopters hovering above the ground?

>>1463671
It takes 24 hours to go around the earth when you're standing on the ground. Congratulations, you have achieved that altitude.

>>1463681
Because helicopters haven't escaped earth's gravitational pull. I know how inertia works and how if you jump inside a moving car, you don't fly out the window because you are technically moving in space at the same speed as the car.

My point is to escape from earth's gravitational pull in order to travel while conserving energy

>>1463452
You're a goddman English major, what the fuck do you know about basic physics.

>>1463498

I'm a Walmart garden center employee, and I think I am qualified to answer.

A pen would not exist on the moon.

There's complex vector mathematics that prove this but someone's asking about dolomite lime,

>>1463689
yeah but i have to escape earth's gravitational pull and remain stationary while the earth rotates under me hurf durf

It is way too late to put the troll line in this thread. Nobody this self-righteously stupid posts anything other than religion threads. Not even english majors.

>>1463724
You're upset because you can't understand why a good idea works

This is why we aren't using cars powered by nuclear fission

>>1463733
Yeah but that negligible amount of pull will be negated by the fact that the earth is moving around the sun

You'd first have to accelerate to negate your motion relative to the center of the earth, which is equal to, let's see

40 000 000/(24 * 3600)
~460 m/s

Then you'd have to safely reaccelerate to that speed when you make contact with the earth. Also you'd only be able to travel to locations exactly on your latitude.

>>1463696
>escape from earth's gravitational pull
physical impossibility, the farther away you get its force diminishes to almost none, but it's still there to some extent.
also, everything else entirely wrong with this idea

>>1463739
yeah I know, that's why I said EVERYTHING ELSE THAT'S SO WRONG WITH THIS

>>1463734
>you would only be able to travel to locations that are exactly at your latitude
This is solved by me jumping at an angle. If I wanted to jump to England, I'd have to jump upward at about a 30 degree angle from DC, as opposed to going straight up, and then stay in the air for approximately 19 hours

>>1463742
>hasn't even bothered to read the thread nor does have any comprehension of basic physics

>>1463700

the guy probably withdrawn from basic algebra based physics twice.....and even then the guy probably got a C- in it.

>>1463760
That's exactly what would happen if he could jump high enough to reach escape velocity.

>>1463766
Wrong, I got a 4 on my AP physics test

>>1463773
I said that I would remain -stationary- in space, not that i would continue traveling in a straight line into the void of space

You don't really understand the point of travel, do you? How would the idea work if nobody reached their destination?

>>1463470
hmm only if you are beyond the Moon or something.
Problem with people is that they see people flying on MIR/ISS and think that they're free from gravity

like

yeeeeaaaaaawhhh let's fly 8D!!!111!!eleven!!!

Okay buddy, and how the hell your ship stays around the Earth?

Houston we have an ANCHOR? Don't think so.
The problem with your idea is.. the whole idea.

>>1463818
That's a neat idea: using a really, really long cable that would allow me to stay in place outside of earth's gravitational pull

>>1463834
Yeah genious, and how to keep away from the freaking CABLE PULL?

And this whole Earth-Space cable is old:

http://en.wikipedia.org/wiki/Megascale_engineering
http://en.wikipedia.org/wiki/Orbital_ring
http://en.wikipedia.org/wiki/Lunar_space_elevator

SUCCESSFUL TROLL

>>1463903
i was going to say that

>Hello /sci/, English major here.
that, children, was where you should have stopped reading and posted trollface.gif