During a test of a spring in a mechanical toy, a force of 3.0 N produces an extension of 0.060 m. The spring is within its limit of proportionality. What is the spring constant?
50 N/m
0.020 N/m
0.18 N/m
500 N/m
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.