Physics (AS & A Level) · Oct / Nov 2017 · Paper 13 · Question 18
9702Gravitational potential energy and kinetic energy
A trolley rolls along a horizontal surface and then travels up a slope before reaching a second horizontal surface. The slope is of length L. The trolley has mass M. The slope is at an angle α to the horizontal surface. The second horizontal surface is at height h above the first surface. Assume negligible frictional forces. The acceleration of free fall is known. In order to determine the minimum initial velocity of the trolley for it to reach the top of the slope, which additional values are needed?
- Ah and M
- BM, L and h
- Cα, L, M
- Dh only
As printed in the paper
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Correct answer: D. h only
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