Problem $6\mathrm{.}40-$ Enhanced $-$ with Hints and Feedback

Part B

Conside the truss shown in $($Figute $1)$ Suppose that $\backslash ($ F$\_\{1\}=4\mathrm{.}5\backslash$mathrm$\{$kN$\}\backslash )$ and $\backslash ($ F$\_\{2\}=7\backslash$mathrm$\{$kN$\}\backslash )$

Figure

Determine the force in membat CDP

Express your answer to three signifieant figures and include the appropriate units. Enter negative value in the ease of compression and positive value in the case of tension.

View Available Hint$($s$)$

Hint $1.$ Hewy to find Fo

Firs, detamine the suppot reaction at $\backslash ($ E $\backslash ).$ Then cut the thuss through members $\backslash ($ C D$,$ C F $\backslash ),$ and $\backslash ($ F G $\backslash ),$ and considar the right portion of the sectioned truss. Fog can be determined form the moment equilibrium equation about point $\backslash ($ O $\backslash ),$ the imtersection point of extensions of membera $\backslash ($ D $\mathrm{.}8\backslash )$ and $\backslash ($ F G $\backslash )$ posthke scalans for members in tension and negative scalars for members in compressing.

$\backslash [$

$\backslash$tilde$\{$F$\}\_\{$C E$\}=$

$\backslash ]$