The plate is subjected to a tensile force P = 5 kip. If it has the dimensions shown, det...

The plate is subjected to a tensile force P = 5 kip. If it has the dimensions shown, determine the principal stresses and the absolute maximum shear stress. If the material is ductile it will fail in shear. Make a sketch of the plate showing how this failure would appear. If the material is brittle the plate will fail due to the principal stresses. Show how this failure occurs.