Problem $3_{?}$

A rigid plate $($AC$)$ is connected to flat steel bars by pins at A and B$.$ The horizontal flat steel bar

$ED$ is also connected via pins at points $E$ and $D.$

Member AE consists of tw$06mm$ by $25mm$ parallel flat bars, while members EB and ED are

single flat bars with dimensions $8mm$ by $30mm.$

If the structure is subjected to a $2-$kip vertical force at point A$,$ find the axial $($normal$)$ stress in

members AE$,$ EB$,$ and ED$.$

Figure $3\mathrm{.}1$: Structure with a plate and steel flat bars.