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1.7 Energy, work and power

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Question 287

A hoist is used to lift concrete blocks of equal weight to the top of a scaffold.

Which of the following quantities will not affect the total work done by the hoist?

A

The height of the scaffold

B

The total number of blocks lifted

C

The time taken to lift the blocks

D

The weight of each block

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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