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Determine the coordinaes of the x-y plane through which the wrench passes

  1. Oct 3, 2012 #1
    1. The problem statement, all variables and given/known data
    In tightening a bolt whose center is at point O, a person exerts a 56-lb force on the ratchet handle with his right hand. In addition, with his left hand he exerts a 10-lb force as shown in order to secure the socket onto the bolt head. Determine the equivalent force-couple system at O. Then find the point in the x-y plane through which the line of action of the wrench passes.

    Imaged attached

    2. Relevant equations



    3. The attempt at a solution

    I calculated the resultant and moment as follows:

    Rx = 0
    Ry = -10 lb
    Rz = -56 lb

    Mx = (-56lb)(2.1 inches) = -117.6 ln-in
    My = (-56 lb)(6.5 inches) = -364 lb in
    Mz = 0

    I fairly certain that the above values are correct. My confusion is with calculating the point on the x-y plane through which the line of action passes. I would appreciate any help. Thanks
     

    Attached Files:

  2. jcsd
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