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Homework Help: Finding the force overcoming friction

  1. Dec 16, 2007 #1
    1. The problem statement, all variables and given/known data
    There are two ways to find how much work is done overcoming friction. Please describe both methods.

    2. Relevant equations
    Wf = Ff x d

    3. The attempt at a solution
    I know one method-- you have you know the force overcoming friction. You would use (Wf = Ff x d). But i really cannot figure out the calculation that can be done to find wasted work. can someone PLEASE help me?!! thank you so much!
  2. jcsd
  3. Dec 16, 2007 #2
    please help! :(
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