5: You are designing a different machine part and have determined the principal stresses at the point of maximum stress (the location where failure would first occur). The principal stresses are _1=300 MPa, _2=50 MPa and _3=0 MPa. The yield strength of the material is 280 MPa. What is the name for this special case of stress (one principal stress equal to 0) Calculate if failure is predicted under Tresca? Calculate if failure is predicted under Von Mises? Was the calculation in part c necessary, based on your result from part b