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Homework Help: Finding the point where the line of action intersect with r

  1. Oct 14, 2015 #1
    1. The problem statement, all variables and given/known data
    I'm having problem of finding the point where the line of action intersect with CD , hot to do it ?
    Fx = -500cos60 - 250(4/5)
    Fy = 300 + 500sin60 + 250(3/5)
    FR = 991N

    2. Relevant equations


    3. The attempt at a solution
     

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  2. jcsd
  3. Oct 14, 2015 #2

    haruspex

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    What can you say about moments?
     
  4. Oct 15, 2015 #3
    moment = rF r = perpendicular distance from the force... Is there any shortcut to do this question ? or just keep on trial and error until get the correct ans ??
     
    Last edited: Oct 15, 2015
  5. Oct 15, 2015 #4

    haruspex

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    No, I mean what is the relationship between the moments of the forces and torque in the diagram about C and the moment of the equivalent force?
     
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