Problem $2(40$ pts$)-$ Trusses

Consider the truss shown here. Assume $\backslash (\backslash$mathbf$\{$P$\}\_\{1\}=100\backslash$mathrm$\{$kip$\}\backslash )$ and $\backslash ($ a$=4\mathrm{.}5\backslash$mathrm$\{$ft$\}\backslash ).$

$($a$)$ Identify all zero force bars.

$($b$)$ Determine reactions.

$($c$)$ Determine the bar force in each member of the truss. When reporting member forces, clearly indicate units and if in tension or compression.