A portable instrument case contains a tray supported by a spring. Two candidate springs are tested.
| Spring | Original length in mm | Length when a force of 6.0 N is applied in mm |
|---|---|---|
| A | 80 | 110 |
| B | 65 | 85 |
Both springs remain below their limits of proportionality for all the forces in this question.
Calculate the spring constant of spring A.
The spring must extend by no more than 0.035 m when a force of 9.0 N is applied.
Explain which spring should be used.
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.