Effect of earth rotation on gravity at poles – Rankers Physics
Topic: Gravitation
Subtopic: Acceleration Due to Gravity and its variation

Effect of earth rotation on gravity at poles

If the earth stops rotating about its axis, the acceleration due to gravity will remain unchanged at
equator
latitude \(45^\circ\)
latitude \(60^\circ\)
poles

Solution:

The effective gravity is \(g' = g - \omega^2 R \cos^2 \theta\). At the poles, \(\theta = 90^\circ\), so \(g' = g\), which is independent of the earth's angular velocity.

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