A-LevelPhysicsWork, energy and powerMay/June 2014Paper 1 Q151 Mark
A small mass is placed at point P on the inside surface of a smooth hemisphere. It is then released from rest. When it reaches the lowest point T, its speed is 4.0 m s⁻¹. The diagram (not to scale) shows the speed of the mass at other points Q, R and S as it slides down. Air resistance is negligible. [Figure 15.1] The mass loses potential energy E in falling from P to T. At which point has the mass lost potential energy E/4?
AQ
BR
CS
Dnone of these
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The correct answer is B. 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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