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Spring 2 initial length m Length of spring m 12cm 14cm 16cm 19cm 22cm 30cm Change in length Ax m 6 5cm 6 5cm 6 5cm 6 5cm 6 5cm 6 5cm Applied force F N 2 2N 2 9N 3 5N 4 6N 5 2N 8 2N Data You can apply force to the spring by hanging slotted weights from it or by clamping c end to a table and pulling on the spring with a spring scale or Vernier force pro connected to the computer The Vernier probe will need to be calibrated with a kno force or standard weight The length of the spring can be measured with a ru Remember however you are graphing the change in length so don t forget to record initial length of the spring Also do not stretch the spring out close to its limit it n the spring and complicates the mathematical model Spring 1 initial length m Length of spring m 14cm 12cm 10cm 1 1 2 3 13cm 15cm 16cm Data Analysis Conclusion Using the Pivot Interactive Spring Has Sprung Graphs graph force F in N vs cha in length of spring or displacement Ax in m for both springs Regardless of which the dependent or independent variable graph F on the y axis and Ax on the x a E Elastic potential slope Ax 2 y int Ax Change in length Ax m 9cm 9cm 9cm 9cm 9cm 9cm 5 25 3N 18 1N 9N 20 8N 26 78N 30 4N T Applied force F N The accepted equations for force and elastic potential energy for a spring include a term called the spring constant k in N m What do you think the spring constants are for spring 1 and spring 2 Explain

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