Two linear springs, P and Q, are being tested for suspending a sensitive instrument inside a transport case.
Spring P has a spring constant of 300 N/m. During a load test, spring P is pulled with a force of 12 N.
Calculate how much longer spring P becomes.
Give your answer in cm\text{cm}cm.
Under a force of 10 N, spring Q increases in length by 2.5 cm.
Calculate the spring constant of spring Q.
Explain which spring would increase in length more if the same force were applied to both springs.
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.