Given that $a=6\mathrm{.}5m,b=5\mathrm{.}5m,c=7\mathrm{.}5m,d=1\mathrm{.}5m,e=14\mathrm{.}0m$ and $=30.$ The force $F=112N$ is along the

direction of CD$.$ Determine the moment of the force $F$ about the door hinge at A by using $r_{AD}$ and $r_{AC}.$ Note that A and $B$

are hinges and their exact locations are shown by black dots, they are in $xy$ plane.

Find moment $M_A$ using $r_{AC}$ :

k$)N*m$

Find moment $M_A$ using $r_{AD}$ :

$M_A$:$1,i+,j+$

k$)N*m$