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Question 30402
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Work, Power and Energy: Work — Perpendicular Force MCQ

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Work — Perpendicular ForceEasyQuestion 30402

Question

A force acts perpendicular to the displacement. Work done is:
  1. A
    Maximum
  2. B
    Fs
  3. C
    Zero
    Correct
  4. D
    Negative

Correct answer

Zero

Explanation

W = Fs cos90° = 0. A centripetal force, for example, does zero work on a body in circular motion.

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