$2.)$ For the beam and loading shown:

a$.)$ Draw the complete shear and moment diagrams, also determine:

b$.)$ the maximum bending stress $($ state the location along the beam and on the cross$-$section where this occurs$).$

c$.)$ the state of stress at point $D$:$(x,y,z{)}_0=(30,1\mathrm{.}5,0)$ in$.$

cross$-$section