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1.7 Energy, work and power

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Question 419

A motorized winch is used to pull a heavy container of mass M M\,M up a rough ramp. The cable from the winch is parallel to the ramp. The tension in the cable is maintained at a constant value TTT. The container is pulled a distance s s\,s along the ramp, and in doing so, it rises through a vertical height yyy. Which of the following expressions represents the work done by the winch on the container?

A

T×sT \times sT×s

B

T×yT \times yT×y

C

M×g×yM \times g \times yM×g×y

D

M×g×sM \times g \times sM×g×s

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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