Physics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 16

A pulley of radius 0.40 m supports weights of 20 N and 15 N by means of a thin string, as shown. The weights are moved by slowly rotating the pulley clockwise through an angle of 60°. What is the increase in the total gravitational potential energy of the weights?

1. A0.33 J
2. B2.0 J
3. C2.1 J
4. D15 J

As printed in the paper