HW $10\mathrm{.}39$

$10\mathrm{.}39$ In preliminary design studies, the vertical forces on an airplane's wing are modeled as shown. The distributed load models aerodynamic forces and the force exerted by the wing's weight. The $80-kN$ force at $x=4\mathrm{.}4m$ models the force exerted by the weight of the engine. Draw the shear force and bending moment diagrams for the entire wing.