Four pedal mechanisms contain return springs. At the positions shown in the table, each spring stores 0.72 J of elastic potential energy. Each spring remains below its limit of proportionality.
| Pedal mechanism | Extension of spring in m\text{m}m |
|---|---|
| P | 0.030 |
| Q | 0.040 |
| R | 0.050 |
| S | 0.060 |
Which pedal mechanism contains the spring that exerts the greatest force?
Pedal mechanism Q
Pedal mechanism S
Pedal mechanism P
Pedal mechanism R
106 exam-style questions on AQA GCSE Physics 5.3 Forces and elasticity, covering 5.3 Forces and elasticity. Each one has a worked solution and a mark scheme showing where the marks go.