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  1. Define the term spring constant K. 
  2. The three springs shown below are identical and have negligible weight. The extension produced on the system of the is 20cm.
    3 identical springs with negligible weight
    Determine spring constant of each spring. 

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  1. Measure of stiffness of an elastic material or ratio of force to extension of an elastic material
  2. Parallel → F=2ke1 => 40 = ke1 => e1 = 20/k
    Single → F = 2ke2 => 20 = ke2 => e2 = 20/k
    eT = e1 + e2 =>20/k20/k+ 20/k40/= k = 2N/cm
    extension of each spring = 10, k = 20N/10cm
    = 2N/cm
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