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2 Springs attached?

  1. Oct 28, 2014 #1
    1. The problem statement, all variables and given/known data

    Two springs which have force constants 0.90 N/m and 1.29 N/m are linked end to end. How much work is required to stretch the springs by a distance 0.01 m?

    2. Relevant equations


    3. The attempt at a solution

    I just add the total force together so:

    (.5)(.9)(.01)^2 + (.5)(1.29)(.01)^2

    = 1.095e^-4 J.
     
  2. jcsd
  3. Oct 28, 2014 #2

    NascentOxygen

    User Avatar

    Staff: Mentor

    I'm sure they mean for you to extend the two-spring combo by a total of 0.01m.

    It would not be possible to pull on the end of just one and by that extend each by 0.01m in any case.
     
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