Problem $4$: A cantilever of length $1\mathrm{.}2$ m and of the cross section shown in figure below carries a vertical load of $10$ kN at its outer end, the line of action being parallel with the longer leg and arranged to pass through the shear centre of the section $($i$.$e$.$ there is no twisting of the section$).$ Find the stress set up in the section at points A$,$ B and C$,$ given that the centroid is located as shown. Determine also the angle of inclination of the N$.$A$.$