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Homework Help: Equilibrium question

  1. Mar 30, 2009 #1
    Equilibrium question with distance and weight

    1. The problem statement, all variables and given/known data
    Would someone be able to tell me if my attempt at this is correct. It seems too easy. If it is not could you help?

    2. Relevant equations
    Sum of the forces in the X direction
    Sum of the forces in the Y direction
    Mid point = DF

    3. The attempt at a solution

    Attached Files:

    Last edited: Mar 31, 2009
  2. jcsd
  3. Mar 31, 2009 #2
    I am just seeing if i am on the right path. A simple yes or no would be enough.
    Thank you
  4. Mar 31, 2009 #3

    Doc Al

    User Avatar

    Staff: Mentor

    No, it's not quite right. Hint: What's the tension in the rope? Then you can sum the forces on the sliding collar.
  5. Mar 31, 2009 #4
    Thanks Doc Al
    I will look at it again when i get home from work.
  6. Apr 1, 2009 #5
    I was going about this the wrong way, making it too complicated.
    1st what I did was get the angle where the rope attached to collar A and the rod, γ = cos-1 (40/50), γ=36.87 ; the to find x I just used tan36.87= 20/x  x = 20/tan36.87 so the result is x = 26.67in.
    I find that I over think a problem too much but I guess that is because I find it hard to find a starting point.

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