Physics (AS & A Level) · May / June 2025 · Paper 12 · Question 15

A square shop sign of uniform density has mass 2.4 kg and sides of length 0.86 m. The sign is supported by a hinge along its top edge. There is friction in the hinge so that the sign hangs from it in equilibrium at an angle of 15° to the vertical, as shown. What is the moment about the hinge of the weight of the sign?

1. A2.6 N m
2. B4.0 N m
3. C5.2 N m
4. D9.8 N m

As printed in the paper