What is the acceleration of the earth's rotation and what will be the effect on the value of acceleration due to gravity at the poles if the rate of rotation of earth increases?
The centripetal acceleration is about 3.39 cm/sec^2 at the equator which is about 0.35% the acceleration of gravity at the surface of the earth, g. There will be no change in value of g at poles. The acceleration due to gravity decreases due to rotation of the earth. This effect is zero at poles and maximum at the equator. The value of acceleration due to gravity is independent of rotation of the earth.