Problem $4$

A prismatic cantilever beam with a cross$-$section in the shape of Z$-$section $($see figure$)$ is made of material with Elastic modulus: $E=70{10}^3$MPa. The beam is loaded with vertical frorce, as shown in the figure.

a$)$ Find the stress at point $A$ at the fixed end

b$)$ Find the tip deflection using the generalized flexure method