question_answer

    Suppose that the angular velocity of rotation of earth is increased. Then, as a consequence.

A)  There will be no change in weight anywhere on the earth

B)  Weight of the object, everywhere on the earth, will decrease

C)  Weight of the object, everywhere on the earth, will increase

D)  Except at poles, weight of the object on the earth will decrease        

Correct Answer: D Solution : [d] Effect of angular velocity on acceleration due to gravity is given by

so with increase in the decreases

but at poles so