http://www.worldjumpday.org/

Tomorrow, 6 million people will jump simultaniously. The impact of all those people landing at once is supposedly powerful enough to knock Earth out of its orbit, and into a new one. Solving world hunger, and global warming.

Discuss.

What's the point of that? I doubt it'll work, anyway.

Six million people isn't going to move the Earth. Neither will one billion. Here's the answer from the Straight Dope if all the citizens of China jumped at the same exact time, would it knock the Earth out of orbit:

"The possibility of an actual test thus being remote, I have been forced to rely on my considerable powers of inductive logic, to wit: given the principle that every action has an equal and opposite reaction, when the Chinese get up on their chairs, they would essentially be pushing the earth down in the process of elevating themselves. Then, when they jumped off, the earth would simultaneously spring back, attracted by the gravitational mass of one billion airborne Chinese persons, with the result that the Chinese and the earth would meet somewhere in the middle, if you follow me. The upshot of this is that action and reaction would cancel each other out and the earth would remain securely in orbit.

Just for fun, however--after you've been doing this job for a while you get a pretty bizarre notion of what constitutes a good time--suppose 1,000,000,000 Chinese, give or take 27,000,000, were somehow to materialize atop chairs without their having to elevate themselves thereto. And suppose they jumped off.

Having performed astonishing feats of mathematical acrobatics (requiring the entire afternoon, I might note--sometimes I can't believe the crap I spend my time on), I calculate that the resultant thud in aggregate would be the equivalent of 500 tons of TNT. Not bad, but nowhere near enough to dislocate the earth, which weighs 6 sextillion, 588 quintillion short tons." - Cecil Adams, The Straight Dope

I doubt only six million people is going to do the trick.

hmm...I'd probably forget anyway XD

Yeap. For one, you need to apply force that equals the mass of the earth. Then apply enough extra force to acually knock it slightly off its orbit.



6 million is not enough.

I do not think, even everyone on this small planet could even do that. It seems, impossible if you ask me. *Shrugs*

this sounds like it belongs in General disscussions

Um.. 6 million people jumping at the same time = 2% of a nuclear bomb

Good luck!

Six million overweight people maybe. :mellow:

Che, this idea is so useless. Even if we somehow did manage to "knock the Earth out of it's orbit", what would stop it from making a new orbit, and not just crash into another planet or the sun?

The gravity of the sun holds the planets in orbit, so if we were knocked out of our current one at some point in the distant future it's highly likely we'd re-enter a different orbital path as opposed to crashing into something.

Perhaps...

But how is it known for sure that there is absolutely no orbital path that happens to go through the sun doesn't exist?

That link looks like you wanna crush the Earth into a more compact shape.



V
> O <
^

Well if our the path puts our perihelion close to the sun then we're screwed anyway, but I'm fairly sure that nothing could put the Earth into such a dangerous position.

Six million overweight people maybe. :mellow:

I was going to say that~
If you find 6 million "Half Ton" men
then maybe~

I was going to say that~
If you find 6 million "Half Ton" men
then maybe~

I'm looking at you America.

XD XD XD
well what about Germany they eat the most meat XD

So what? America's the fattest.

half ton men can't jump though :mellow:

They can fall.

Instead of the jump thread it's not the thread about fat people XD

First off, coordinating 6 million people to jump worldwide at the exact same time isn't gonna happen. Second, what about space shuttles? When they leave the earth, I bet they generate much more force pushing against the earth to make its ascent into the sky than 6 million people who jump. But is the space shuttle's force enough to create a new orbit? I doubt it.

Perhaps I missed something, but I believe the world is round... If EVERYONE jumps, the world will just compress. You'd have to time is just right so that people on one side of the globe jumps and the other side lands.

And regardless, the side that jumps still has to land on the ground, knocking, whatever Yoctometre it actually does, the world would have moved, back into place.

(hmmm... I wonder if I'll kill another DP topic again...)

It's. Not. Going. To. Work. Why would people bother participating in this anyways? It doesn't make any sense to me, argh.



I'm looking at you America.

I'm looking at South. You?

Just kidding. Yeah, United States Americans are fatties.

Wow, how retarded can humans get?

Do none of them have the gene, "Common Sence" and knowledge of "Physics" ?

Obviously.. not.

So what? America's the fattest.

OOOOH! So thats why we have won the Tour de France, how many years now? 7?

OOOOH! So thats why we have won the Tour de France, how many years now? 7?

Wow, that was just retarded. Take a moment here and reflect upon your reply and try to see what's wrong here.

Anyway... :topic:

In my opinion, it doesnt work even if you get everyone in the planet to jump, even if they are all concentrated in one area of the globe.
The sun's gravitational pull is much more powerfull than the earth's, and I dont think some billions of pounds of force will move the earth at 42.1 km/s.

Think about it. A rocket has to go 11.2 km/s to escape Earth's gravitational pull, while Earth itself as to go around 3 times the amount needed to escape the Sun's gravitational pull to drift Earth out of orbit. The results wouldn't be good even if you get the Earth to drift out of orbit into a new one. When Earth drifts out of orbit, inequality exists and the gravitational pull of the sun has to correct this inequality by positioning the earth to where the power of gravitational pull and the earth's gravitational pull is constant and equal. This means that pushing it off orbit could cause the Earth to move quite violently at speeds unimaginable just to fix it (think about a magnet). During that time, Earth could possibly collide with other planets/space debree/rocks/meteorites that could cause further devastation. Once the Earth settles into its new orbit (if possible), climate change will happen drastically, and that means river and ocean systems will change if not for years, decades, causing a climate shift and everyone who inhibits the earth will suffer its changes. Note that moving the earth closer or farther from the sun by a small distance affects the temperatures by a good amount.

Global warming will also not be fixed by this phenomenon. Even if the Earth moves a bit away from the sun to make suitable conditions that sun's rays won't dramatically heat the earth, the problem of Global Warming will still exist. The greenhouse gases in our atmosphere will not eradicate because of its shift of orbit, and even with minimal sunlight these rays can still be trapped with the pollutants in the air, keeping the temperatures as hot as they were, if not less than a few degrees before the earth shifted out of orbit.

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

Wait why woudl you want to knock Earth out of orbit, the slightest change can push us far enough to collide with another planet thus causing a chain reaction and destroying our galaxy.
So why would intelligent life forms want to kill themselves?
Simple, cause they're dumb enough to attempt a stunt like that (hopefully not~)

Work equals force times distance. It's like a baby trying to push a refridgerator.

oh! Its today!

*gets out of chair to jump a few times*

fuk it. Other people will jump for me.

fuk it. Other people will jump for me.

They're probably all thinking the same thing. :mellow:

Didn't work, obviously, or we'd all feel a change at that moment-which we didn't.

What's sad is that they actually reached 600 million people to, if the records are true, participate.