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Old 03-26-2018, 01:15 AM   #1204 (permalink)
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All true, no doubt. Masses vary, acceleration due to gravity does not. That's why they can distinguish the two. How they discriminate a layer of water between the ice and rock, I have no idea.

'Centrifugal force' is really a change in angular momentum. I doubt that varies.

Change my, you know, the thing.