The extension of a spring (s s\,s mm) is directly proportional to the weight (w w\,w kg) attached to it.
s s\,s is given by the formula: s=4.5ws = 4.5ws=4.5w
Find the weight attached when the spring has an extension of 36 mm.
Practise Edexcel GCSE Maths Direct and Inverse Proportion with exam-style questions for Foundation and Higher tier. 96 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.