A stage platform can rotate about a central pivot. During a test, the platform is balanced.
| Force | Force in N | Perpendicular distance from the pivot in m | Direction of moment |
|---|---|---|---|
| P | 140 | 0.45 | clockwise |
| Q | 85 | 0.60 | clockwise |
| R | unknown | 0.95 | anticlockwise |
Calculate force R.
124 exam-style questions on AQA GCSE Physics 5.4 Moments, levers and gears, covering 5.4 Moments, levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.