On Wed, Jan 22, 2020 at 5:40 PM Jürg Wyttenbach wrote:
> Unluckily the earth is not flat even in the curved sense as it is an
> ellipsoid with at least a delta north-south/east-west in radius of about
> 10km.
>
> Even more unluckily gravitation is not a constant it slightly depends on
> the
I don`t think it matters if the planet is rotating since the surface is
frictionless.
Of course measuring a change of weight in the real world that is
exclusively due to the rotation of earth is complicated by many variables.
The link you provided on the reactive centrifugal force could be one
Speaking of unusual thought experiments involving centripetal force, later
found to be real products - here is a surprising old electrical device which
explores the intersection of charge and mechanical spin.
https://www.youtube.com/watch?v=h3EpyjATE48
It is a rotating anode tube (valve to
Harry,
For your ice covered planet, you may need to indicate if it is rotating or
not and then, depending on your frame of reference, address Coriolis
forces.
This link addresses the weight at poles vs that at the equator.
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