(Solved): The stresses shown act at a point in a stressed body. Assume stress magnitudes of \( S_{x}=40 \mat ...

The stresses shown act at a point in a stressed body. Assume stress magnitudes of \( S_{x}=40 \mathrm{MPa}, S_{y}=92 \mathrm{MPa}, S_{x y}-44 \mathrm{MPa}, a=1 \), and \( b= \) 4. Using the equilibrium equation approach, determine the normal and shear stresses \( \sigma \) (positive if tensile, negative if compressive) and \( \tau \) (magnitude only) at this point on the inclined plane shown. Answers: \[ \sigma=\quad \mathrm{MPa} \tau=\quad \mathrm{MPa} . \]