A stepped bar is held in equilibrium by several forces acting at different points along the length, as shown in the figure below. The magnitudes for three of the forces are $F_2=37kN,F_3=17kN,$ and $F_4=36kN.$ All forces act parallel to the axis of the bar, and both pairs of forces $F_2$ and $F_3$ are located the same distance from the centerline of the bar. Determine the internal normal forces $(P)$ at points $A,B,$ and C $.$

Note: Express tension forces as positive $(+)$ and compression forces as negative $(-).$

$\backslash$table$[[$P$\_($A$)=,$number $($rtol$=0\mathrm{.}01,$ atol$=1$e$-05),$kN$,??],[$P$\_($B$)=,$number $($rtol$=0\mathrm{.}01,$ atol$=1$e$-05),$kN$,?],[$P$\_($C$)=,$number $($rtol$=0\mathrm{.}01,$ atol$=1$e$-05),$kN$,?]]$