A-LevelPhysicsForces, density and pressure9702/12 · May/June 2021 · Q121 Mark

A disc of radius r is acted upon by two opposite forces, each of magnitude F. The forces form a couple, as shown. [Figure 12.1] What is the torque of this couple?

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A1/2 Fr

BFr

C2Fr

D4Fr

✓ Correct answer

C: 2Fr

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Topic: Forces, density and pressure, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2021 Paper 1 Variant 2, question 12.

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