A cable tension meter contains a spring. As the tension in a cable increases, the spring stretches.
The spring remains within its linear elastic region for all the forces used.
| Force in N\mathrm{N}N | Spring length in mm\mathrm{mm}mm |
|---|---|
| 3.0 | 26 |
| 7.0 | 34 |
Calculate the unstretched length of the spring and the length of the spring when the force is 9.0 N.
Show your working.
102 exam-style questions on Edexcel GCSE Physics 15.1 Forces and springs, covering 15.1.1 Elastic and inelastic distortion, 15.1.2 The spring constant, 15.1.3 Work done in stretching a spring, and 15.1.4 Linear and non-linear force–extension. Each one has a worked solution and a mark scheme showing where the marks go.