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Varying forces and work done

  1. Nov 19, 2009 #1
    1. The problem statement, all variables and given/known data
    http://img97.imageshack.us/img97/5319/workdone.gif [Broken]
    There are 2 varying forces acting on the block.
    Fy = y/5 + 6
    Fx = 5x2
    The block is displaced by the forces 45deg from +x-axis: 4.5m
    What is the work done by the force to the block.

    please correct me if the question is wrong (created by me!)


    3. The attempt at a solution
    Firstly, I'm wondering should we integral by Fx and Fy individually or combine them along the displacement before integration?

    secondly, should we model the object as a particle by summing all forces and calculate the work done or summing up the work done along x-axis and y-axis?

    Thank you.
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
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