Problem $2.$ Skill$/$concept$.$ Drawing shear force$/$normal force$/$moment diagrams. Draw the normal, shear, and moment diagrams for the beam $AB$ with the following loads. Determine the maximum for each internal force in each load case.

a$)$ As shown, but without the force at $C.$

b$)$ As shown, and with the $800$ lb force applied at $C.$

c$)$ As shown, but without the force at $C$ and with a clockwise moment of $2500l{b}^{**}ft$ applied at $C$ instead.