A-LevelPhysicsForces, density and pressureOct/Nov 2011Paper 1 Q131 Mark

Two co-planar forces act on the rim of a wheel. The forces are equal in magnitude. Which arrangement of forces provides only a couple?

Q: What topic does this question test?

This question tests Forces, density and pressure in A-Level Physics (syllabus code 9702). It is worth 1 mark.

ATwo parallel forces acting in the same direction on the wheel's rim

BTwo forces acting towards a common point inside the wheel

CTwo forces acting along the same line, towards each other

DTwo parallel forces acting in opposite directions on the wheel's rim

✓ Correct Answer

The correct answer is D: Two parallel forces acting in opposite directions on the wheel's rim

📋 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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About This A-Level Physics Question

Topic

This multiple-choice question tests Forces, density and pressure in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2011 examination, Paper 1 Variant 2.

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