Question

Which is greater : the angular speed of the earth's rotation or that of the hour hand of a clock?

Answer 1

Explanation:

Hour-hand of a watch completes one rotation in 12 hours, while earth completes one rotation in 24 hours. So angular velocity of hour-hand is double the angular velocity of the earth. This is because ω = 2 π T , where T is the time taken to complete one rotation and ω is the angular velocity.

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