$1)$ For the beam $(E=30E6$psi$)$ shown determine

a$.$ The maximum normal and shear stress

b$.$ the normal and shear stress at point $B$ on

the beam and $F$ on the cross section.

$2)$ For the state of stress shown determine:

a$)$ The principal stresses. What is the value of shear stress?

b$)$ The maximum shear stress. What is the value of normal stress?