Question $1$

$33pts$

The beam shown in the figure is subjected to a concentrated force, a uniformly distributed downward force, and two couples. $M_0=245ft-lb.B$ is pin support, and $D$ is roller support.

$($a$)$ Determine reactive forces

$($b$)$ Draw shear and moment diagrams and mark values at critical points. All numbers should be rounded to $1$ decimal place.