Physics (AS & A Level) · May / June 2026 · Paper 14 · Question 14

A pair of forces acts on a uniform disc pivoted at its centre of gravity P. The diagrams show pairs of forces and the distances between their points of action. Which pair of forces forms a couple with a torque of 1.4 N m?

1. A14 N and 14 N separated by 0.20 m
2. B8.0 N and 8.0 N separated by 0.40 m at 30°
3. C5.0 N and 9.0 N separated by 0.20 m
4. D8.0 N and 8.0 N separated by 0.20 m at 30°

As printed in the paper