Three gears mesh in a line in the order A–B–C, with gear B between gears A and C. Gear A is the driving gear.
| Gear | Number of teeth |
|---|---|
| A | 15 |
| B | 25 |
| C | 45 |
Gear A makes 15 complete clockwise rotations.
Calculate the number of complete rotations made by gear B and by gear C.
State the direction of rotation of gear C.
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.