A student investigates the compression of a helical spring by placing masses on a platform on top of the spring and measuring the decrease in its length.
Give one reason why the reduction in length of the spring eventually reaches a limit as more masses are added.
23 exam-style questions on Edexcel GCSE Physics 15.1 Forces and springs, covering 15.1.1 Elastic and inelastic distortion, 15.1.2 The spring constant, 15.1.3 Work done in stretching a spring, and 15.1.4 Linear and non-linear force–extension. Each one has a worked solution and a mark scheme showing where the marks go.