Since the centrifugal force on the earth would be lower at the poles than the equator, is a person lighter at the equator than at the poles due to its counter effect on gravity?

zbeckabee

The effective weight of a given mass is less at the equator than at the poles. http://www.mathpages.com/home/kmath182.htm Aug 09 06, 9:12 PM

denmarks

It seems that even though you do weigh less at the equator it is only indirectly caused by the centrifugal force. The force creates a bulge at the equator and since you are further from the center of the earth you weigh less. It looks like it is not a counter effect on gravity. Please correct me if I misunderstand the article. Aug 10 06, 9:14 AM

Gnomon

There are two effects: the centrifugal force causes the earth to bulge, so you are further from the centre which reduces the gravity. The centrifugal force also causes you to be lighter by counteracting the gravity. Aug 10 06, 9:22 AM

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