A spring in a parcel-sorting mechanism remains in its linear elastic region as it moves from setting P to setting Q.
The unstretched length of the spring is 18.0 cm.
At setting P, the force exerted on the spring is 6.0 N.
| Setting | Length of spring in cm\mathrm{cm}cm |
|---|---|
| P | 21.0 |
| Q | 23.0 |
Calculate the work done in stretching the spring as the mechanism moves from setting P to setting Q.
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.