A spring retracts a safety barrier when the barrier is released. A technician measures the extension of the spring for three applied forces.
| Force in N | Extension in mm |
|---|---|
| 50 | 10 |
| 100 | 25 |
| 150 | 50 |
The equation relating force, spring constant and extension is F=keF = keF=ke.
Explain, using the measurements, why the technician should not assign one spring constant to the spring over this range.
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.