1) In regards to the cross-sections of straight members, whattwo axes coincide?
2) Give the two equations known as the curved-beam formula.Define each variable.
3) As discussed in class, what is the theory of failure forductile materials?
4) As discussed in class, what is the theory of failure forbrittle materials?
5) What is the most common mechanism of yielding of a ductilematerial, such as steel?
6) The yield stress for a zirconium-magnesium alloy is ?Y = 15.3ksi. If a machine part is made of this material and a criticalpoint in the material is subjected to in-plane principal stresses?1 and ?2 = -0.5?1, determine the magnitude of ?1 that will causeyielding according to the maximum shear stress theory.
