A-LevelPhysicsWork, energy and power9702/12 · May/June 2013 · Q171 Mark

A train on a mountain railway is carrying 200 people of average mass 70kg up a slope at an angle of 30° to the horizontal and at a speed of 6.0 ms⁻¹. The train itself has a mass of 80000 kg. The percentage of the power from the engine which is used to raise the passengers and the train is 40%. What is the power of the engine?

A1.1 MW

B2.8 MW

C6.9 MW

D14 MW

✓ Correct answer

C: 6.9 MW

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Topic: Work, energy and power, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2013 Paper 1 Variant 2, question 17.

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