An automated winch system lifts a theatrical spotlight of weight 160 N vertically upwards to a ceiling grid. The spotlight is raised through a height of 8.4 m in a time of 14.0 s at a constant speed.
Calculate the useful power, in watts, developed by the winch during this lift.
26 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.