A-LevelPhysicsWork, energy and powerMay/June 2024Paper 1 Q151 Mark
A box of weight W is pulled by a force P along a slope. The length of the slope is d, and the box rises a height h. The frictional force between the box and the slope is F. The diagram shows the directions of the forces. [Figure 15.1] The purpose of the slope is to raise the box vertically. Which expression gives the efficiency of the slope?
AFd/Wh
BPd/Wh
CWh/Fd
DWh/Pd
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The correct answer is D. This question tests the candidate's understanding of work, energy and power within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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