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Originally Posted by Structural Integrity
6 billion * 80 kg average is 480 billion kg = 4.8*10^11 kg
The mass of the planet is 5.9742 × 10^24 kg.
This is nearly a factor 10^13.
Assuming that every person can jump up a metre he will leave the ground and land on it again with a speed of 4.2m/s.
So the change in speed of the planet will be about 2 * 4.2 / 10^13 m/s. Rounding errors here and there and lots of assumptions.
You will need to jump an awfull lot for that to be noticable. |
Hm, you un-mystified something there. But on the site I saw a video of a German Professor from Munich University, which has quite a good (if not the best) reputation for physics (and overall anyway) in Germany.
Hm, don't forget, the momentum of the jump would be added perpendicular to the earth's current (circular) motion. Sort of "knocking it out of its old orbit".
But you're right, however you put it, something 10 ^ 13 times lighter than the earth WON'T manage to have an influence. As long as it's a living creature not at least (not talking about meteorites here)...
But these scientists MUST have some sort of facts, or are they plain stupid or what?