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1.7.2 Work done

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Question 2

An elevator on a construction site lifts equipment of total mass 400 kg, initially at rest on the ground, with uniform acceleration.

When the equipment is 8.0 m from the ground, its speed is 6.0 m/s.

How much work is done on the equipment during this lifting process? (Take g=9.81 m s−2g = 9.81\text{ m s}^{-2}g=9.81 m s−2)

A

7.2 kJ7.2\text{ kJ}7.2 kJ

B

31.4 kJ31.4\text{ kJ}31.4 kJ

C

38.6 kJ38.6\text{ kJ}38.6 kJ

D

45.8 kJ45.8\text{ kJ}45.8 kJ

Markscheme

1.7.2 Work done Questions

  1. IGCSE
  2. /Physics
  3. /1.7.2 Work done

67 exam-style questions on CIE IGCSE Physics 1.7.2 Work done. Each one has a worked solution and a mark scheme showing where the marks go.

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