For the segmented bar system shown, members $(1)$ and $(2)$ each have a diameter of $25$ mm $,$ and

member $(3)$ has a diameter of $14$ mm $.$ Find:

a$)$ Draw the axial force diagram for the system with the sign convention discussed in class.

b$)$ Determine the maximum stress in the system, in MPa. Be sure to note which segment it occurs in$.$

c$)$ Movement of point B relative to the support in $mm,$ clearly indicate direction. Assume E$=200$

GPa. $[$Ans$.$ to check: $v_B=1\mathrm{.}5mm]$