$(15$ points$)$

copial mom, shoar internal loads $($axial the nont$)$ acting on the bar $1-2-3$ and fram axial rod $2-4$ in the co$-$planer the system shown in Fig$\mathrm{.}1.$ Plot Oach internal load distributions on syo member in the structural system, $P=2000kg$ and $=15.$

Fig. $1$ Structural system of Problem $1$