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Homework Help: Moments and resultant

  1. Sep 27, 2010 #1
    1. The problem statement, all variables and given/known data

    A chiropractor applies a thrust to the spinous process of T6. The magnitude is 400 N and it is applied 90 degrees to the y-axis. While this occurs the superior disc applies a force to the T6 body of 615 N, 75 degrees to the x-axis. The inferior disc applies a force to the T6 body of 620 N, 70 degrees to the x-axis. Determine the resultant force-couple acting on the T6 vertebra at the point of application F2. The coordinates of the points of application for each force are shown in brackets.



    2. Relevant equations

    moment= force by perpendicular distance


    3. The attempt at a solution

    need to get moments first. im dont think i did this right but i moved f1 and f3 to f2 and got moment there.
    f1=.063x400= 38.75 N.m
    f2=.018x620=9.92N.m

    is this right way to get the moment for this question? i believe im doing something wrong with distance
     

    Attached Files:

  2. jcsd
  3. Sep 29, 2010 #2
     
    Last edited: Sep 29, 2010
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