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Le 2011/03/08 11:13, Le_Forgeron a écrit :
> Le 08/03/2011 16:48, Alain a écrit :
>> Gravity is highest at the exterior equator and null at the interior
>> equator.
>
> I would question that second part for a demonstration.
>
> Null at the center, ok.
> Highest on the exterior equator, ok.
> But null at the interior equator, it might depend on major& minor radius.
>
>
At the interior equator, and anywhere on the disk it define, the gravity
is null. The mass under you is closer, but the mass over you is larger.
But, you will not notice that as the planet is spining on itself: the
centrifugal force will keep you on the ground. It will also somewat
offset the gravity bias.
Alain
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