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Question 30431
JEE Physics · Easy

Work, Power and Energy: Work by Normal Force MCQ

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Work by Normal ForceEasyQuestion 30431

Question

Work done by the normal force on a block sliding along a horizontal surface is:
  1. A
    Positive
  2. B
    Negative
  3. C
    Zero
    Correct
  4. D
    mg×displacement

Correct answer

Zero

Explanation

Normal force is perpendicular to the horizontal surface, hence perpendicular to displacement → W = Fs cos90° = 0.

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