A powered cable system pulls a scenery platform across a stage. The system exerts a constant force of 450 N in the direction of motion. The platform moves 12 m in 30 s.
Calculate the useful power output of the cable system.
128 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency, covering 8.3.1 Power and 8.3.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.