GCSE Questions: ForcesQ6. Katrina carried out an investigation to determine the spring constant of a spring. Here is her results table:
Describe a method she could have used to obtain this data. Your answer should include any cause of inaccuracy in the data. Your answer may include a labelled diagram. [6 marks] (b) Katrina measured the extension for five different forces rather than just measuring the extension for one force. Suggest why. [1 mark] (c) This graph has some of the data obtained by Katrina already plotted. Complete the graph by plotting the missing data and draw in the line of best fit. [2 marks] (d) Write down the equation that links extension, force and spring constant. [1 mark] (e) Calculate the spring constant of the spring that Katrina used. Give your answer in newtons per metre. [4 marks] (f) Hooke's Law states that:
Katrina concluded that over the range of force used, the spring obeyed Hooke's Law. Explain how the data supports her conclusion. [2 marks] [16 Marks TOTAL] 
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