The radius of the Earth is about 6.37 ×10^6 m. A) What is the centripetal acceleration of a point on the equator due to the rotation of earth about its axis? Answer in units of m/s^2

B) What is the centripetal acceleration of a point at the North Pole? Answer in units of m/s^2.

B) At north pole the answer is 0 as R = 0 in the last equation above as this radius is the distance from the axis of rotation and this passes through the North (and South) Pole.

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