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Physics (AS & A Level) · May / June 2018 · Paper 13 · Question 17

9702Energy conservation

A force of 1000 N is needed to lift the hook of a crane at a constant velocity. The crane is then used to lift a load of mass 1000 kg at a constant velocity of 0.50 m s–1. What is the power needed to lift the hook and the load?

  1. A4.9 kW
  2. B5.4 kW
  3. C20 kW
  4. D22 kW

As printed in the paper

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Correct answer: B. 5.4 kW

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