The frame structure shown in the figure has fixed support at A and pin support at $D.$ When $w_0=5\mathrm{.}3\frac{k}{f}t$ and $20-k$ force is applied to member $AB,$ determine reactive forces at supports A and $D.A$ is a fixed support and $B$ and $C$ are pin joints. Member $CD$ is a quarter circle. All numbers should be rounded to $2$ decimal places.

The beam shown in the figure is subjected to two concentrated forces with $F_0=58kN,$ a uniformly distributed force, and two couples. B is a pin support and E is a roller support

$($a$)$ Determine reactive forces, and

$($b$)$ Draw shear and moment diagrams and mark values at critical points.