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Circular Motion: Centripetal Work MCQ

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Centripetal WorkMediumQuestion 30616

Question

Work done by centripetal force in one complete revolution:
  1. A
    2πFr
  2. B
    F×2πr
  3. C
    Zero
    Correct
  4. D
    Fr

Correct answer

Zero

Explanation

Centripetal force is perpendicular to velocity (and displacement direction) at every point → W = Fs cos90° = 0 over any arc.

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