The cantilever beam AB has a rectangular cross section of $\backslash (150\backslash$mathrm$\{$~mm$\}\backslash$times $200\backslash$mathrm$\{$~mm$\}\backslash )($or $\backslash (0\mathrm{.}15\backslash$mathrm$\{$~m$\}\backslash$times $0\mathrm{.}2\backslash$mathrm$\{$~m$\}\backslash )).$ Knowing that the tension in the cable BD is $10\mathrm{.}4$ kN $($the direction is from B to D $),$ compute the normal stress and the shear stress at point a which is on the top fiber of the beam, at a distance of $0\mathrm{.}3$ meter from the cantilever support at $\backslash ($ A $\backslash ).$