The rigid bar BDE is supported by two rods AB and CD$.$ Rod AB is made of aluminum $($Eal $=70$ GPa$)$ and has a cross$-$sectional area of AAB$=600$ mm$2$; Rod CD is made of steel $($Esteel $=200$ GPa$)$ and has a cross$-$sectional area of ACD $=600$ mm$2.$ The load P $=29$ kN is applied at point E as shown in the figure. $[$LAB $=0\mathrm{.}3$ m$,$ LCD $=0\mathrm{.}4$ m$,$ a $=0\mathrm{.}2$ m$,$ b $=0\mathrm{.}4$ m$]$Determine the internal force of rod AB The answr in KN

Determine the displacement of point B in mm

Determine the displacement of point E in mm