A-LevelPhysicsWork, energy and power9702/12 · May/June 2016 · Q181 Mark

An escalator in an underground station has 250 people standing on it and is moving with a velocity of 4.3 ms⁻¹. The average mass of a person is 78kg and the angle of the escalator to the horizontal is 40°. What is the minimum power required to lift these people?

A54 kW

B64 kW

C530 kW

D630 kW

✓ Correct answer

C: 530 kW

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Topic: Work, energy and power, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2016 Paper 1 Variant 2, question 18.

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