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1.7.4 Power

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Question 71

An electric winch takes 2.5 minutes2.5\text{ minutes}2.5 minutes to lift a 600 kg load to a height of 14 m.

What is the average useful power developed against gravity by the winch?

(Take the acceleration of free fall, ggg, to be 9.8 m/s2.)

A

22 W22\text{ W}22 W

B

56 W56\text{ W}56 W

C

550 W550\text{ W}550 W

D

33 kW33\text{ kW}33 kW

Markscheme

1.7.4 Power Questions

  1. IGCSE
  2. /Physics
  3. /1.7.4 Power

95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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