An electric motor turns a heavy display platform. Gear A is large and is fixed to the motor shaft. Gear B is smaller and is fixed to the platform shaft. The teeth of gears A and B interlock.
The platform must turn more slowly than the motor.
How should a technician alter the drive?
Replace gears A and B with two equal-sized gears
Remove gears A and B and join the shafts directly
Exchange gears A and B between the two shafts
Reverse the motor while leaving gears A and B in place
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.