Use the Method of Sections for this problem. From drawing a FBD of the entire system and summing

the moments about point A $,$ you find that the reaction force at roller D$=26$kN$.$Determine the force in

members EF$,$BE$,$ and BC of the truss and state if these members are in tension or compression. Set

P$\_(1)=9$kN$,$P$\_(2)=12$kN$,$ and P$\_(3)=6$kN$\{$:$($C$)$;BC$=13$kN$($T$)$;BE$=1\mathrm{.}41$kN$($T$)]$