“Let us assume that the average (mean) mass of earth’s 6 billion inhabitants is 100kg (a gross overstatement, but the numbers are better). That would make their collective mass 6×10^11 kg.
Now let’s assume that all these people have fused into one sphere of that mass. If we assume that acceleration due to gravity on earth is 10ms^-2 then if the mass jumps one and one fourth meters it will land with a velocity of 5ms^-1.
The kinetic energy produced by the jump would equal to:
75×10^11 Joules or 7.5 TJ (tera-joules)
7.5 TJ is approximately 2% of the energy released by one Megaton of TNT, which is also the size of a modern H-Bomb.
Basically the United States has tested similar bombs, but the earth’s remained fixed.
That may be because the earth has a mass of 6×10^24 which means that the mass I spoke of was:
10,000,000,000,000 times smaller, which means the displacement caused by everyone jumping would shift the earth a tiny fraction of the radius of a hydrogen atom.”
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