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PV graph question (trying to determine the work)

  1. Jan 24, 2008 #1
    1. The problem statement, all variables and given/known data
    Look at the PV diagram of a system above. (attached) The units for P and V are atmospheric pressure atm and liter L. Process A to B and B to C are straight lines on it.
    How much is the work done by the system from A to C in J?



    2. Relevant equations
    i know that work is the area under the graph, but when i add up areas, answer is wrong for some reason??


    3. The attempt at a solution
    W = .5(4*3) + .5(4*1.5) * 152J
    = 1596J

    this is wrong though
    ???
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Jan 25, 2008 #2
    >>>>Work Done is....[ p*delta V] i.e. pressure multiplied by CHANGE IN VOLUME.

    This is enough for a hint...^^^
     
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