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Jan 7, 2019 at 11:23 comment added Hans This is not a satisfactory answer. I understand the air pressure has to be such as to stabilize the orientation. This explanation sounds like justifying the result after knowing it. My question is how, geometrically, it is exactly doing so and to predict the stable orientation without knowing it in advance.
Jan 7, 2019 at 10:12 history answered kalle CC BY-SA 4.0