A $10-$ft long rigid structure is modeled as the cantilevered bar AB in the figure. The lift of the wing is modeled as lb$/$ft$,$ with x $=0$ at the left end $($A$).$ Ignoring the weight of the structure:a$)$ Draw the free$-$body$-$diagramb$)$ Calculate the reactions at the wall using integration only.c$)$ Calculate the centroid of the load w$($x$)$ and use it to check part b by solving for the reactions using the equivalent point force.