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Question 30448
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Work, Power and Energy: Work — Multiple Forces MCQ

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Work — Multiple ForcesMediumQuestion 30448

Question

Two forces act on a 3 kg block on a smooth surface: F₁ = 10 N (forward), F₂ = 4 N (backward). Over 5 m displacement, net work done is:
  1. A
    30 J
    Correct
  2. B
    50 J
  3. C
    20 J
  4. D
    70 J

Correct answer

30 J

Explanation

Net force = 10 − 4 = 6 N. W_net = 6×5 = 30 J. (Or W₁ + W₂ = 50−20 = 30 J.)

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