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The acceleration due to gravity at the p...

The acceleration due to gravity at the poles is `10ms^(-2)` and equitorial radius is 6400km for the earth. Then the angular velocity of rotation of the earth about its axis so that the weight of a body at the equator reduces to 75% is

A

`1/1600 "rads"^(-1)`

B

`1/800 "rads"^(-1)`

C

`1/400 "rads"^(-1)`

D

`1/200 "rads"^(-1)`

Text Solution

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The correct Answer is:
A
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