Question

.A body of mass 2 Kg is being rotated in a circle by 0.5 m long string, the work done by centripetal force is
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Answer 1

Answer:

The correct answer is 0

Explanation:

Because the work-done is 0 if the angle between force and displacement is 90°, here tangent is formed, where displacement is the line which coincides the circle at only on point and cf is the line which falls perpendicular to the line.

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