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The angular speed of rotation of earth a...

The angular speed of rotation of earth about its axis at which the weight of man standing on the equator becomes half of his weight at the poles is given by

A

`275xx10^(-4)radsec^(-1)`

B

`9.75xx10^(-4)radsec^(-1)`

C

`8.75xx10^(-4)radsec^(-1)`

D

`8.0xx10^(-4)radsec^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`(g)/(2)=g-Romega^(2)`
`impliesomega=sqrt((g)/(2R))`
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