A machine operator uses a rigid foot pedal that rotates about a fixed pivot to lift a safety guard.
Immediately before the guard starts to lift, the pedal is balanced. The guard exerts a load force of 750 N with a line of action at a perpendicular distance of 0.080 m from the pivot.
The operator compares two pedal designs.
| Pedal design | Perpendicular distance from the pivot to the line of action of the effort |
|---|---|
| A | 0.30 m |
| B | 0.50 m |
Calculate the difference between the minimum effort forces required with pedal design A and pedal design B.
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.