A student measures the length of a hanging spring using a ruler held in her hand. Why might her measurements be inaccurate?
The spring is stretched by its own weight.
The ruler measures length in centimetres.
The ruler may not be vertical or level with the spring.
The weights are added to the spring one at a time.
40 exam-style questions on AQA GCSE Physics 5.3 Forces and elasticity, covering 5.3 Forces and elasticity. Each one has a worked solution and a mark scheme showing where the marks go.