every human being on the face of the earth jumped up at the same time...and then came down at the same time? Would the earth like....turn into a purple hole.
2007-05-17 12:19:35 · 13 answers · asked by CanadianGuitar 2 in Science & Mathematics ➔ Physics
:) Interesting theory....
Actually, nothing of any real interest would happen. The people are (more or less) evenly distributed across the surface, so the force from one side would be counter acted by the force on the other side.
In an extreme case, imagine getting all the people on the earth into a small area, say each person is in a 3 foot square area, and having them all jump, even then you wouldn't have much of a change.
With about 6 billions people, one every three feet, you would have all the people in a 25.4 mile square jumping at once. Figure an average mass of about 90 kg which is about 200 lb per person. Figure each person can jump about 1 meter high ( that's an extremeley high estimate) they would hit the ground at about 4.4 m/s.
Using kinetic energy formula 1/2 mv^2 and multiplying by 6 billion people would generate about 5.29E12 Newtons of force, which does sound like a lot. Compare that to the mass of the earth and apply newtons F=ma formula.
F = 5.29E12 M(earth) = 5.98E24
a = F/M = 8.85E-13 m/s
So you could cause the earth to have a new 0.0000000000000885 meter/second drift, not very noticeable.
2007-05-17 12:30:54 · answer #1 · answered by mr_moose_man 3 · 0⤊ 0⤋
The law of conservation of momentum states that,
"In the absence of external force,the total momentum of a system of particles remains constant, ALTHOUGH momentum of individual particles may change (due to internal forces) but overall momentum of vsystem will not change ,
The total momentum of a system can only be changed by the EXTERNAL FORCE .
Imagine some students are inside a bus at rest on a horizontal road.
If the students start jostling,pushing or pulling each other ,the momentum of any student may change due to push but the bus is not affected.
The bus remains at rest.
Even if all the students inside the bus push the seat next to their seat, the bus will not move.
The bus can be moved (without its engine running) , if students push from outside the bus. Then their push will be an external force.
If every human being jumped up ,then NOTHING WILL HAPPEN, human beings and earth form a system and the jumps will produce internal forces which do not affect the motion of the earth -human beings system
2007-05-17 19:45:03 · answer #2 · answered by ukmudgal 6 · 0⤊ 0⤋
No the human race's combined mass is not nearly large enough to cause any effect on the earth whatsoever...
The chances of any detectable variation lessens with the fact that we are spread all over the world, your hopethesis would have a greater chance of being proven if we all jumped in a region in which we are as close together as possible...
But even then...
2007-05-17 19:26:04 · answer #3 · answered by Mandél M 3 · 0⤊ 0⤋
If everybody in China got in a big group and jumped up at the same time, and landed at the same time, it would register on the Richter Scale, about a 3.6 or a 5 if I remember.
I also what would happen if everybody jumped at the same time.
Think about how hard that would be to organize, what with reaction times and the speed of sound.
2007-05-17 19:25:31 · answer #4 · answered by Bryan 2 · 0⤊ 0⤋
Nothing would happen. There would be an earthquake of about 2 on the Ritcher scale (unnoticeably small). It's like trying to move your car by pushing on the inside of the windshield - it just doesn't work!
And there's no such thing as a purple hole.
2007-05-17 19:32:24 · answer #5 · answered by Superconductive Magnet 4 · 0⤊ 0⤋
Agreeable there would be some disturbance on rector scale.. but since every action has equal and opposite reaction even if every one landed at the same time, and the force every single person applied on the earth surface would be counter acted and be cancelled due to above mentioned law ....
But if you do give it a shot... please send me a notification 2 weeks in advance…
2007-05-18 00:37:57 · answer #6 · answered by Kamal 1 · 0⤊ 0⤋
Do your research dude. It would actually be a pink hole due to the hyperphotogenic personality of Carrie Underwood multiplied by the inverse square root of the number of auto mechanics wearing slippers.
2007-05-17 19:35:17 · answer #7 · answered by Mike 3 · 0⤊ 0⤋
Nothing would happen. The center of gravity of the Earth with all the people on it would not change.
2007-05-17 20:24:19 · answer #8 · answered by squeezie_1999 7 · 0⤊ 0⤋
i doubt it cuz it isnt like every one in the world is in a big area.
everyone is somewhere different /not a whole mob of ppl jumping
2007-05-17 19:23:47 · answer #9 · answered by ? 3 · 0⤊ 0⤋
Nothing. We're like ants on a grapefruit.
2007-05-17 19:27:25 · answer #10 · answered by jsardi56 7 · 0⤊ 0⤋