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Homework Help: Work and Energy problem

  1. Oct 19, 2009 #1
    1. The problem statement, all variables and given/known data

    A crate with scientific equipment slides down a curved frictionless side of lunar crater of the depth h, and then up along the other side which is an inclined plane. The coefficient of kinetic friction between crate and incline is k, and the inclined side makes an angle θ with the horizontal. Use energy methods to find the maximum height ymax reached by the crate.

    2. Relevant equations

    I know there are others but I'm not sure what is relevent

    3. The attempt at a solution
    Right now I have something like mgy=mgh-(k*n)y/sin theta.

    I'm pretty sure this is terribly wrong but I need help with some explanation to it. Please!
  2. jcsd
  3. Oct 19, 2009 #2


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    Science Advisor
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    Gold Member

    That looks right, you just need to calculate the normal force, which you have designated as 'n'.
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