A force meter uses a spring to move a pointer along a scale. The pointer position is measured from a fixed mark on the scale. The spring remains in its linear region throughout.
| Force applied to the spring (N) | Pointer position (m) |
|---|---|
| 2.0 | 0.030 |
| 4.0 | 0.040 |
| 6.0 | 0.050 |
Calculate the spring constant and determine the pointer position when the force applied to the spring is 7.0 N.
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.