A student kept adding weights to a spring and plotted a graph of force applied against extension. Above a force of 6.0 N the line on the graph was no longer straight.
Explain why the line is no longer straight above 6.0 N.
The student removed all of the weights. The spring did not return to its original length. Name the type of deformation the spring has undergone.
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.