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Work to Compress Spring

  1. Oct 7, 2010 #1
    1. The problem statement, all variables and given/known data
    A spring, with a spring constant of 87 N/m, was compressed a distance of 8.6cm (0.086m). How much work was done in order to compress the spring?

    2. Relevant equations

    3. The attempt at a solution
    I tried to plug in the numbers as follows in the above equation - but I can't get the answer out. I have been doing this for ages am like a broken record - pse snap me out of this programming!

    WC= 2*87*.086^2 = 1.286904J
    Apparently, the correct answer is .32J

  2. jcsd
  3. Oct 7, 2010 #2
    you are off by a factor of 4
    you multiplied by 2
    maybe you were supposed to multiply by 1/2
  4. Oct 10, 2010 #3
    thanks - I tried to recalculate it this is not the case.
  5. Oct 10, 2010 #4


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    Staff Emeritus
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    According to this equation, you are supposed to multiply kd2 by 1/2, not by 2.
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