If you drop an object through a hole in the Earth stretching from the North Pole to the South Pole, it would oscillate back and forth about 17 times per daypic.twitter.com/crCfBFK2qp
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The easiest argument is that gravitational force within a homogeneous sphere depends linearly on the distance to the center. Hence, it's a Hookian, spring, force.
I wouldn’t call that an argument as much as I’d call it an assertion
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Am I right sir.
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Taking the realistic case including all dissipative forces, the motion should die off lograthimically (log decrement)
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