PROBLEM $2(5$ points$)$: The truss shown is the canopy of the bleachers of an open stadium. It is idealized that the support at $A$ is hinge and at $B$ is roller. Considering the uniformly distributed load $w,$ and given the following:

$w=25k\frac{N}{m}$

$H_1=0\mathrm{.}5m$

$H_2=1\mathrm{.}2m$

$H_3=0\mathrm{.}8m$

$H_4=1\mathrm{.}2m$

$a=0\mathrm{.}8m$

$L_1=1\mathrm{.}1m$

$L_2=3m$

Neglect the self$-$weight of the canopy.

Calculate the following:

$($for member forces, indicate if in compression or tension$)$

$1.$ Reaction at A $,$ in kN $.$

$2.$ Reaction at B $,$ in kN $.$

$3.$ Force in $DE,$ in kN $.$

$4.$ Force in DF $,$ in kN $.$

$5.$ Force in CF $,$ in kN $.$