A horizontal display bar is free to rotate about a pivot. The weight of the bar acts through the pivot. Three objects exert downward forces on the bar.
Viewed from the front, forces on the left produce anticlockwise moments and forces on the right produce clockwise moments.
| Side of pivot | Force in N | Perpendicular distance from the pivot in m |
|---|---|---|
| Left | 3.5 | 0.40 |
| Left | 2.0 | 0.15 |
| Right | 5.0 | xxx |
Calculate the distance xxx when the display bar is balanced.
The 5.0 N object is moved to a perpendicular distance of 0.28 m from the pivot. Explain what happens to the display bar.
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.