$5.$AB has a rectangular cross section of $150\backslash$times $200$mm$.$ Knowing that the tension in the

cable BD is $10\mathrm{.}9$ kN and neglecting the weight of the beam:

a$\backslash$sigma $\_($x$)=-\mathrm{.}34$MPa,$\backslash$sigma $\_($y$)=-0,\backslash$tau $\_($xy$)=-\mathrm{.}49$MPa $\backslash$sigma $\_(1)=\mathrm{.}349$MPa,$\backslash$sigma $\_(2)=-\mathrm{.}689$

in$-$plane