Physics · May / June 2023 · Paper 11 · Question 11

A large stone is rolled onto a lorry using a ramp. [diagram: ramp of length l, stone lifted height h onto lorry] The length of the ramp is l. The stone is lifted a height of h. The mass of the stone is m. The weight of the stone is W. Which expression is equal to the useful work done on the stone?

1. Am × h
2. BW × h
3. Cm × l
4. DW × l

As printed in the paper