Question

Rigid bar ABC is supported by bronze rods (1) and(2) as shown below. A concentrated load of P = 30kips is applied to the free end of rod (3). Each of the rods has an elastic modulus of E =15000 ksi and an area of 0.2 in.². The rod lengthsare L₁ = 13 ft, L2= 22 ft, and L3 = 9 ft. If a = 42 in. and b = 72 in., what is the downward deflection of the rigid bar at A?

Fig: 1

Fig: 2

Fig: 3

Fig: 4