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1.7 Energy, work and power

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Question 83

A crane lifts 12 steel beams, each of weight 1500 N.

What other information is needed to calculate the useful work done in lifting the beams?

A

the vertical distance the beams are lifted

B

the mass of each beam

C

the time taken to lift the beams

D

the power output of the crane

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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