A spring keeps a retracting clothesline taut and is operating in its linear region. During a test, the force on the spring and its extension are measured.
| Force on spring | Extension |
|---|---|
| 5.4 N | 3.0 cm |
Calculate the spring constant, kkk, for this spring. Give your answer in N/m\text{N/m}N/m.
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.