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Homework Help: Work Problem, opposing forces (no friction)

  1. Oct 7, 2008 #1
    1. The problem statement, all variables and given/known data
    In the figure below,

    http://www.webassign.net/userimages/jshemwell@lincolnpark.il/Net Force/Two_opposing_horizontal.gif

    T1 = 32 N, and T2 = 19 N. The surface has no friction. The block travels a displacement of 11 m to the right as a result of these forces.
    a. What is the work done on the block by T1?

    b. What is the work done on the block by T2?

    c. What is the work done on the block by gravity?

    d. What is the work done on the block by the normal force?

    e. What is the net work done on the block by all forces?


    2. Relevant equations



    3. The attempt at a solution
    I got (32N)(11m)(Cos0)=325 J for a.
    I got (19N)(11m)(Cos180)=-290 J for b.
    I got 0 for c. and d.
    I am not sure how to find e. and did I do the rest of the problems correctly?
     
  2. jcsd
  3. Oct 7, 2008 #2
    Never mind, I figured it out ;)
     
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