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1.7.4 Power

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Question 39

Two different lifting systems, System X and System Y, are used to lift the same container from the ground level to the top shelf of a warehouse.

System X takes 40 s to lift the container. The useful work done on the container by System X is $W$ , and the useful power developed is $P$ . System Y takes 25 s to lift the same container to the same shelf.

Which of the following correctly describes the useful work done and the useful power developed by System Y?

Useful work: $W$ , useful power: less than $P$

Useful work: $W$ , useful power: more than $P$

Useful work: more than $W$ , useful power: more than $P$

Useful work: less than $W$ , useful power: less than $P$

Markscheme

1.7.4 Power Questions

IGCSE
Physics
1.7.4 Power

95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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