Given the Determinate Simply Supported Over$-$Hanged

Beam with Moving Loads as shown below.

$($a$)$ Determine the $V_{C(max\text{p}\text{o}\text{s}\text{i}\text{t}\text{i}\text{v}\text{e}).}$

$($a$)$ Determine the $M_{C(max\text{p}\text{o}\text{s}\text{i}\text{t}\text{i}\text{v}\text{e})}.$

$($b$)$ Determine the Maximum Possible Positive Moment that can be

developed in the beam.