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1.7 Energy, work and power

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Question 182

A forklift performs work by lifting a heavy crate vertically. It then lifts a second crate.

Which of the following changes results in the forklift doing four times as much work?

A

Force used is doubled; height is doubled

B

Force used is doubled; height is halved

C

Force used stays the same; height is doubled

D

Force used is halved; height is halved

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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