Question

The angular velocity of the earth's rotation about its axis is . An object weighed by a spring balance gives the same reading at the equator as at height above the poles, the value of will be:

A

B

C

D

Hard
Solution
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Correct option is B)

At equational it experience a pseudo force outwards due to the  the rotation, which is absent in poles.
On rearranging,

Solve any question of Gravitation with:-
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