The expression for centrifugal force on mass m is given by mω²r. Where ω is angular velocity, and r is the distance from the rotation axis. Anywhere on earth, ω is the same (one rotation per 24 hours). So the force varies linearly with radial distance from the rotation axis. This distance is 0 at the poles. Hence, centrifugal force at poles is zero.
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SANTOSH KUMAR
June 21, 2018The expression for centrifugal force on mass m is given by mω²r.
Where ω is angular velocity, and r is the distance from the rotation axis.
Anywhere on earth, ω is the same (one rotation per 24 hours). So the force varies linearly with radial distance from the rotation axis. This distance is 0 at the poles. Hence, centrifugal force at poles is zero.