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GK QUESTION#3051

A force of 8 N acts on an object and produces a displacement of 3 metres in the direction of the force. The force acts throughout the motion. What is the work done?

  1. A12 J
  2. B18 J
  3. C24 JCorrect answer
  4. D30 J
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Answer

C. 24 J

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Explanation

For a constant force parallel to displacement, work is W = Fs cos 0° = 8 × 3 = 24 J. Work is measured in joules. A force perpendicular to displacement would do no work on that displacement.

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