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Rigid Body Static Equilibrium. Find force components

  1. Feb 26, 2012 #1
    1. The problem statement, all variables and given/known data

    Pin C joins members ABC and CDE

    2. Relevant equations

    Sum of moments at a point = 0
    Sum of vertical forces = 0
    Sum of horizontal forces = 0

    Weight of triangle acts as a force at its centroid (1/3) its length according to this figure.

    3. The attempt at a solution

    See pictures.

    I get 2 equations with 3 unknowns.

    10By + 22.5Dy = 77500
    Ay + By + Dy = 7500

    Any advice what to do next?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Feb 27, 2012 #2
    Since it says Pin C joins members ABC and CDE, does that mean I can take each part and sum forces to zero?

    Such that working with CDE Dy = 1500 allowing me to decouple the other two equations.

    Just a thought. Not sure.
     
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