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Question 30459
JEE Physics · Medium

Work, Power and Energy: JEE — Energy on Circular Path MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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JEE — Energy on Circular PathMediumQuestion 30459

Question

A particle moves in a horizontal circle at constant speed. The work done by the centripetal force is:
  1. A
    Positive
  2. B
    Negative
  3. C
    Zero
    Correct
  4. D
    Depends on radius

Correct answer

Zero

Explanation

Centripetal force is always perpendicular to velocity (displacement direction). Work = F·ds = Fv cos90° = 0.

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