$(50$ points$)$ a$)$ Draw the FBD of all the members.

b$)$ Find the reactions forces at A and D $.$

Pulley@ C

Mumber BD

$F_x=\frac{b_x-63kA}{D_x}=37\mathrm{.}8kN(53\mathrm{.}1)=\frac{O}{?}$

$M_x=\frac{O}{?}=$BDsin$(53\mathrm{.}1){1\mathrm{.}5}^6-12(3)-12$

$BD=63kN$

${\displaystyle \underset{?}{\overset{?}{}}}{F}_y==63sin(53\mathrm{.}1)-A_y-12-12$

$A_y=26\mathrm{.}4kN$

$E{F}_x==A_x-63cos(53\mathrm{.}1)$

$A_x=37\mathrm{.}4kN$

$A_x,A_y=37\mathrm{.}8kN,26\mathrm{.}4kN,D_x,D_y=37\mathrm{.}8kN,50\mathrm{.}4kN$