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Equivalent force and couple moment

  1. Aug 13, 2017 #1
    1. The problem statement, all variables and given/known data
    I will post a photo of the question in the thread once I've created it. I have found the magnitude and angle of the resultant force, but I am unsure of how to proceed. I find moments and couples confusing.

    2. Relevant equations

    $$\vec M = \vec r \times \vec F$$

    3. The attempt at a solution

    So, to find ##\vec r## I chose a point on ##\vec F## (1, 0.8069) (call it C), and calculated ##r_{BC}##: ##r_{c} = -7i + 0.8069j##. Then I took the cross product of r and F, and got 41.58kN.m, but this is incorrect, and I am stumped.
     
  2. jcsd
  3. Aug 13, 2017 #2
  4. Aug 14, 2017 #3
    i found the answer, thanks.
     
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