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Originally Posted by JohnD
Kilopi,
Simple - hydrostatics. The water to bulge out must come from somewhere! It moves from the "sides" of the Earth, relative to the Moon's direction, into the "bulges", so the water level around the sides goes down.
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I meant, you've explained the bulges in the Earth's equipotential surface using your theory--how do you explain the depressions? The bulges and depressions are there whether there is water or not--hydrostatics has nothing to do with it.
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It WILL tend to move away away from the CoM, forming a bulge towards the Moon.
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The ocean farthest from the moon is three times farther from the CoM than the ocean nearest the moon--why are the bulges about the same size?