question_answer

The angular velocity of the earth with which it has to rotate so that, acceleration due to gravity on 60° latitude becomes zero is: (Radius of earth = 6400 km, at the poles\[g=10\text{ }m{{s}^{-2}}\])

A) \[2.5\times {{10}^{-3}}rad/s\]   

B)  \[5.0\times {{10}^{-3}}rad/s\]

C) \[10\times {{10}^{-3}}rad/s\]                     

D)  \[7.8\times {{10}^{-2}}rad/s\]