A winch moves a scenery platform in two movements during a theatre show. The platform moves at a steady speed in both movements.
First movement: the winch lifts the platform vertically through 1.5 m using an upward force of 2400 N.
Second movement: the winch uses a horizontal cable to pull the platform 18 m across the rough, level stage floor. The winch does 5400 J of work during this movement.
Calculate the work done by the winch during the first movement.
Calculate the pulling force exerted by the cable during the second movement.
Compare the energy transfers during the two movements.
113 exam-style questions on AQA GCSE Physics 5.2 Work done and energy transfer, covering 5.2 Work done and energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.