An elastic cord holds equipment in place on a trailer. The cord is 0.80 m long when no force is applied. A force of 45 N increases the length of the cord to 0.95 m. The cord remains below its limit of proportionality throughout.
Calculate the force needed to increase the length of the cord to 1.02 m.
106 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.