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Homework Help: Spring Compressed and released

  1. May 25, 2010 #1
    1. The problem statement, all variables and given/known data

    A spring with a spring constant 3.2N/cm is compressed 33cm and released. The 3kg mass skids down the frictionless incline of height 24cm and inclined at a 23 degree angle. The acceleration of gravity is 9.8m/s^2. The path is frictionless except for a distance of .8m along the incline which has a coefficient of friction of .5.

    2. Relevant equations
    Wnc=Efinal - Einitial
    mvf^2/2- kx^2/2+mgh


    3. The attempt at a solution

    I have attempted to solve it twice so far and have gotten the answers wrong. I may have my equations that I am using wrong. I am also having trouble figuring out x and h.

    Any help would be great!
  2. jcsd
  3. May 26, 2010 #2


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    Homework Helper

    You did not say how are the spring and mass related.

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