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Conservation of Energy through friction and cliffs

  1. Feb 25, 2014 #1
    1. The problem statement, all variables and given/known data
    j8e53l.png


    2. Relevant equations
    E = K + U
    K = 1/2mv^2
    u = mgh


    3. The attempt at a solution
    Sorry if it's hard to read:
    anei9z.jpg
     
  2. jcsd
  3. Feb 26, 2014 #2

    haruspex

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    All looks good until the last step. You should not have a v in the answer, just m, g and R.
     
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