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1.7 Energy, work and power

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Question 421

An electric hoist is used to pull a container up an inclined ramp to an elevated platform.

Which of the following measurements is not needed to calculate the rate at which the hoist does work against gravity?

A

the time taken to pull the container up the ramp

B

the weight of the container

C

the vertical height of the platform

D

the length of the ramp

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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