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The angular velocity of the earth with w...

The angular velocity of the earth with which it has to rotate so that the acceleration due to gravity on `60^@` latitude becomes zero is

A

`2.5 xx 10^(-3) rad s^(-1)`

B

`5.0 xx 10^(-1) rad s^(-1)`

C

`100 rad s^(-1)`

D

`7.8 xx 10^(-2) rad s^(-1)`

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The correct Answer is:
A
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