Question

A man buys 2 kg of gold at the poles.will its weight increase or decreaseat the equator

Answer 1

The gravitational pull at the equator is less than that at the poles. This means that the weight of the 2kg gold would be lesser at the equator than at the poles.This is due to two reasons:
-The bulge at the equator makes objects on the surface of the earth to be further away from the center of the earth,hence, lesser pull than at the poles.
-The bulge also causes a centrifugal force on the objects at the equator. Therefore objects at the equator are subjected to a force that is against the gravitational force hence minimizing the net force of the gravitational pull.