Required information

Consider the given beam and loading where $P=4\mathrm{.}5$kip$\frac{s}{f}t($For W$1468,S_x=103i{n}^3.)$

Determine the distance a for which the absolute value of the bending moment in the beam is as small as possible. $($Round the fir answer to two decimal places. You must provide an answer before moving to the next part$)$

The distance $a$ is $$ ft$.$