Two ideal gears mesh directly. The driving gear has a radius of 0.040 m and a turning moment of 1.2 N m. The driven gear has a radius of 0.10 m. The tangential force at the teeth has the same magnitude on both gears. What is the turning moment on the driven gear?
0.48 N m0.48\ \mathrm{N\,m}0.48 Nm
3.0 N m3.0\ \mathrm{N\,m}3.0 Nm
1.2 N m1.2\ \mathrm{N\,m}1.2 Nm
30 N m30\ \mathrm{N\,m}30 Nm
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.