Moments -- Rods & weights welded together & hanging at an angle

[nazz]

2 uniform roods each or weight W and length L are welded together so that angel ABC is 90, the two rods are hanging in equilibrium from a fixed loin at A by a hinge which allows the rods to swing in a vertical plane. by taking the moments about the hinge find the angle that AB makes with the vertical.

Question is my force diagram correct or what are the forces involved besides weights ?

please have a look at my force diagram, attached image

 

[haruspex]

Your diagram is drawn as though the centre of mass of rod BC is vertically below A. That will not be the case.

 

[nazz]

so what is right force diagram ?

 

[haruspex]

so what is right force diagram ?

Rod AB has a centre of mass to the right of A. Where does the centre of mass of BC need to be for the centre of mass of ABC to be directly below A?

 

[HalfLostAndSearching]

Your force diagram appears to be correct. In addition to the weights, there are also forces acting on the rods due to the tension in the hinge and the normal force from the fixed point at A. These forces are necessary to maintain equilibrium and should be included in your calculations when finding the angle AB makes with the vertical. It is important to consider all forces acting on the system when analyzing moments and equilibrium.