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Work, Power and Energy: Power — Lift MCQ

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Power — LiftMediumQuestion 30428

Question

A crane lifts a 500 kg load at 2 m/s at constant speed. Power of the crane motor is: (g = 10)
  1. A
    250 W
  2. B
    1000 W
  3. C
    10000 W
    Correct
  4. D
    5000 W

Correct answer

10000 W

Explanation

P = Fv = mgv = 500×10×2 = 10000 W = 10 kW.

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