Q. 11

The weight of a body at the poles is greater than the weight at the equator. Is it the actual weight or the apparent weight we are talking about? Does your answer depend on whether only the earth’s rotation is taken into account or the flattering of the earth’s at the poles is also taken into account?

Answer :

The actual weight of the body is greater at the poles than at the equator. However, the earth’s rotation applies a fictitious centrifugal force on the body, which changes its apparent weight. The rotation causes the shape of the earth to flatten at the poles. hence, the radius decreases and the force due to gravity increases, thus the actual weight increases.

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