In a clock mechanism, a driving gear with 15 teeth meshes directly with a wheel that has 45 teeth. During a test, the wheel makes 4 revolutions.
Which statement describes the motion of the driving gear during the test?
It makes 121212 revolutions in the same direction as the wheel.
It makes 444 revolutions in the same direction as the wheel.
It makes 1.31.31.3 revolutions in the opposite direction to the wheel.
It makes 121212 revolutions in the opposite direction to the wheel.
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.