/sci/ - Science & Math

I've been working on this problem for an hour now. Not sure how to arrive at the final result. Problem is worded as follows:

The rigid bar is supported by the pin-connected rod CB that has a cross-sectional area of 13 mm^2 and is made from 6061-T6 aluminium (E = 68.9 GPa).

Determine the vertical deflection of the bar at D when the distributed load is applied.'


Using the sum of moments about A, I found the force along the rod to be a 1200 tensile force and using dL = FL/AE I found the deformation of the rod due to stress to be 5.58 mm.

How then do I proceed to get the displacement of D? I tried using law of similar triangles and I might just messed it up somehow but I got the vertical displacement of B to be 3.35 mm and vertical displacement of D to be 6.70 mm.

Anyone else with an interest in Engineering wan to have a go at this?