The two vertical steel [E = 200 GPa] rods that support rigid bar ABCD are initially free of stress. Rod (1) has an area of A1 = 340 mm2 and a length of L1 = 3.6 m. Rod (2) has an area of A2 = 315 mm2...

The two vertical steel [E = 200 GPa] rods that support rigid barABCD are initially free of stress.  Rod (1) has an area ofA
₁ = 340 mm² and a length ofL
₁ = 3.6 m.  Rod (2) has an area ofA
₂ = 315 mm² and a length ofL
₂ = 1.2 m.  Assume dimensions ofa = 3.4 m,b = 1.2 m, andc = 1.5 m.  After a load ofP = 60 kN is applied to the rigid bar atD, determine:
(a) the normal stresses in rods (1) and (2)
(b) the magnitude of the downward deflection of the rigid bar atD.