Physics (AS & A Level) · Oct / Nov 2025 · Paper 14 · Question 16

The diagram shows a block P of mass M connected by a string over a frictionless pulley to a block Q of mass m. Block P moves up the slope with a constant velocity v. The slope is at angle θ to the horizontal. The acceleration of free fall is g. The resistive forces on the blocks are negligible. Which expressions give the energy transferred per unit time to block P? 1 mgv 2 Mgv sin θ 3 (M + m)gv

1. A1 and 2
2. B1 only
3. C2 and 3
4. D2 only

As printed in the paper