A spring is used in a mechanical gate latch. When no force is applied, the spring is 75 mm long. During a test, a force of 14 N increases the length of the spring to 110 mm. The spring remains within its linear region for all the forces applied.
Calculate the length of the spring when the force applied to it is 22 N.
102 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.