Two gears, A and B, are in contact with each other.
Gear A has 10 teeth. Gear B has 30 teeth.
Gear A turns gear B.
Gear A turns clockwise.
State the direction in which gear B turns.
Gear A makes 6 complete turns.
Calculate the number of complete turns made by gear B.
The teeth of gear A push on the teeth of gear B.
Explain why the moment on gear B is larger than the moment on gear A.
Suggest one use of a small gear turning a larger gear.
102 exam-style questions on Edexcel GCSE Physics 9.2 Moments, covering 9.2.1 Rotational effects of forces and moments, 9.2.2 The principle of moments, and 9.2.3 Levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.