An electric hoist is used to lift a load of building materials up to a scaffold. During this lift, the useful energy transferred to the gravitational potential energy store of the materials is 4500 J.
State the amount of useful work done on the load as it is lifted.
57 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work. Each one has a worked solution and a mark scheme showing where the marks go.