How to calculate work done by force on an inclined plane.

  1. 1. The problem statement, all variables and given/known data

    The problem is on http://img124.imageshack.us/img124/1518/problem15.jpg


    2. Relevant equations

    F2 x component = F2cos30

    3. The attempt at a solution

    I found the x component of F2 = 40 * cos 30 = 34.64 and then multiplied by 0.6 m to get 20.8 J. Is it right? any ideas ?
     
  2. jcsd
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