A manufacturer tests a tension spring used in a conveyor-belt mechanism. The table shows the extension of the spring for different applied forces.
| Force in N | Extension in mm |
|---|---|
| 0 | 0 |
| 100 | 20 |
| 200 | 40 |
| 300 | 60 |
| 400 | 80 |
| 500 | 110 |
| 600 | 150 |
Explain the change in the spring's behaviour when the force is increased above 400 N. Use values from the table.
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.