Undergrad Four L-shaped members Mechanical Analysis Problem

[jojosg]

TL;DR

This determine the support reactions at A & B

I tried calculate moment about a which is 2a(By + Bx + Ey + Ex +F) + a (Gy + Gx + Cy + Cx). But I don't think I'm correct, any help would be appreciated, this was a question on a final exam paper in my Mechanics course.

 

[wrobel]

Try to write down the equations of equilibrium for each L-like rigid body. You have three scalar static equations for a rigid body in a planar problem.
There are 2 unknown components of a reaction in each hinge and 12 static equations for 4 rigid bodies.
The number of equations and the number of unknowns matches.

 

[jojosg]

Try to write down the equations of equilibrium for each L-like rigid body. You have three scalar static equations for a rigid body in a planar problem.
There are 2 unknown components of a reaction in each hinge and 12 static equations for 4 rigid bodies.
The number of equations and the number of unknowns matches.

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