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Physics puzzle - say you had a ball 10 cm in diameter. Is there a certain density at which point the ball would plummet through the Earth until it reached the center?
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Why is this a puzzle? Seems like a straightforward if complicated and tedious calculation. I’d guess it would happen at near neutron star density.
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I think so? It’s larger ones that collapse into singularities not smaller. There’s probably an evaporation rate or something. Cosmic scale weirdness is far more than we’re used to.
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I mean even the fact that the earth is spherical is fundamentally weird. It is big enough it behaves like a water drop in hydrostatic equilibrium rather than solid matter we’re used to.