A polishing machine uses two interlocking gears. A large driving gear is attached to the motor. It turns a smaller driven gear attached to the axle of the polishing wheel, so the polishing wheel rotates faster than the motor. A technician claims that the faster rotation means the gears transfer more energy to the polishing wheel than the motor supplies.
Explain why the technician's claim is incorrect.
124 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.