Question $21$

$2$ p

The truss shown below has a hinge support at point $A,$ a horizontal roller at point $B,$ and is subjected to two point loads $($P$1$ and P$2).$ If $P1=12kN$ and $P2=72kN,$ what is the force, in $kN,$ in member $AE?$

NOTE: Enter a positive value if the member is in Tension and a negative value if the member is in Compression.