A lever is used to lift a heavy rock. What is the main advantage of using the lever?
It reduces the weight of the rock that has to be lifted
It reduces the distance that the rock has to be lifted
It reduces the force needed to lift the rock
It reduces the time taken to lift the rock
40 exam-style questions on AQA GCSE Physics 5.4 Moments, levers and gears, covering 5.4 Moments, levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.