A horizontal loading platform extends to the right of a pivot. The weight of the platform can be ignored.
Two containers and a lifting mechanism exert vertical forces on the platform. The platform is initially balanced.
| Force source | Direction of force | Force | Perpendicular distance from the pivot |
|---|---|---|---|
| Container A | Downwards | 240 N | 0.75 m |
| Container B | Downwards | 160 N | 1.50 m |
| Lifting mechanism | Upwards | Unknown | 1.20 m |
Calculate the total clockwise moment about the pivot due to the two containers.
Calculate the upward force exerted by the lifting mechanism.
Container B is moved so that its perpendicular distance from the pivot is 1.00 m. The force exerted by the lifting mechanism does not change.
Explain whether the platform remains balanced and, if it does not, the direction in which it rotates.
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.