A student stretched a spring and plotted a graph of the force applied against the extension of the spring. Above 12.0 N the line on the graph was no longer straight.
Explain why the line is no longer straight above 12.0 N.
Explain why the spring constant of the spring cannot be found from the curved part of the line.
40 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.