A lightweight horizontal operating arm on a ventilation louvre pivots at its centre. Three vertical forces act on the arm, as shown in the table.
| Force | Position relative to pivot | Direction |
|---|---|---|
| 14 N | 0.40 m to the left | Downwards |
| 9.0 N | 0.50 m to the right | Downwards |
| 6.0 N | 0.20 m to the right | Upwards |
Calculate the magnitude and direction of the resultant moment on the arm.
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.