A spring in a laboratory cabinet latch is tested. A force of 5.0 N produces an extension of 0.025 m. The spring remains within its limit of proportionality for all forces up to 7.5 N.
Calculate the spring constant of the spring.
The spring must not extend by more than 0.040 m when a force of 7.5 N is applied. Calculate the extension produced by this force and state whether the spring meets this requirement.
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.