A spring is fitted horizontally between a fixed frame and a sliding ventilation panel. The left-hand end of the spring is attached to the frame. Moving the panel to the right pulls the right-hand end of the spring to the right.
State the direction of the force exerted by the frame on the spring.
A used spring is removed from the mechanism and tested. The table shows its length before the test and after the testing force has been removed.
| Measurement | Length in m |
|---|---|
| before the test | 0.180 |
| after the force is removed | 0.185 |
State whether the distortion of this spring is elastic or inelastic.
Two possible replacement springs, P and Q, are compared. Spring P has a spring constant of 30 N/m and spring Q has a spring constant of 50 N/m.
The same force is applied to each spring.
State which spring has the smaller extension.
A new spring fitted in the mechanism has an unstretched length of 0.18 m and a spring constant of 40 N/m. It remains in its linear region.
The force on the spring is 6.0 N.
Calculate the length of the spring.
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.