A-LevelPhysicsWork, energy and powerMay/June 2013Paper 1 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
The correct answer is C: 6.9 MW
📋 Examiner Report & Trap Analysis
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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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