In Figure P17.47/48, employ the virtual-work method to compute the vertical displacement of joint B for the truss. The assumptions are that the loads acting on the truss are P = 15 kips and Q = 20...

In Figure P17.47/48, employ the virtual-work method to compute the vertical displacement of joint B for the truss. The assumptions are that the loads acting on the truss are P = 15 kips and Q = 20 kips and that each member has a cross-sectional area of A = 0.75 in.²
and an elastic modulus of E = 10,000 ksi.