In a pinball machine, a player pulls back a plunger to launch a ball. A metal collar on the plunger shaft hits a physical stop, which limits how far the spring can be compressed.
Explain how this design feature prevents the spring from becoming permanently damaged.
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.