$4\mathrm{.}5-8$ A simply supported beam ABC is loaded by a vertical load $P$ acting at the end of a bracket BDE $($see figure$).$

$($a$)$ Draw the shear$-$force and bending$-$moment diagrams for beam ABC.

$($b$)$ Now assume that load $P$ at $E$ is directed to the right. The vertical dimension $BD$ is $\frac{L}{5}.$ Draw axial$-$force, shear$-$force, and bending$-$moment diagrams for ABC.

PRI