A high-precision tension spring in a mechanical throttle linkage is subjected to a calibration test.
A force of 6.3 N applied to the spring results in an extension of 14 mm.
Determine the spring constant, kkk, of this spring in N/m\text{N/m}N/m.
23 exam-style questions on Edexcel GCSE Physics 15.1 Forces and springs. Each one has a worked solution and a mark scheme showing where the marks go.