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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Interestingly, this "tunnel" just has to be a straight line, doesn't need to go through the centre of Earth for same result.
but then you'd have to worry about the coriolis force and the ball would hit the wall of the tunnel
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Just assume no resistance.
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that's not what does it, it's the coriolis force that would do it.. Any point off axis of the rotation will have an additional angular velocity
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*cough* someone doesn't know physics in non-inertial reference frames *cough*
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Add some butter on the wall, with the heat, will be perfect for nuggets.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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Coriolis force is orthogonal to velocity, so assuming perfectly smooth walls it shouldn't contribute. Centrifugal force might be more of an issue, though.
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Yes, the path is completely different with rotation and neither the models of constant gravity nor with constant density are good approximations, see the recent article: "Free fall through the rotating and inhomogeneous Earth" by S. Isermannhttps://doi.org/10.1119/1.5100942 …
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