(Solved): 4-19. The load of 800lb is supported by the four 304 stainless steel wires that are connected to t ...

4-19. The load of $800\mathrm{lb}$ is supported by the four 304 stainless steel wires that are connected to the rigid members $AB$ and $DC$. Determine the angle of tilt of each member after the load is applied. The members were originally horizontal, and each wire has a cross-sectional area of $0.05{\mathrm{in}}^2$. ${?}_D=0.01567\mathrm{in},{?}_C=0.01176\mathrm{in},{?}_H=0.01455\mathrm{in},?=46.6\left(10^{?6}\right)\mathrm{rad},?=0.355\left(10^{?3}\right)\mathrm{rad}$ 4-21 ? ${?}_{F/E}=0.0020690$ in., ${?}_E^{?}=0.0036782$ in., ${?}_F=0.0113in.$