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[**** Bonus Problem 2***] A circular bar with diameter of 2 inch and length of 20 inch is fixed at the end A. The bar is loaded at the other end by a downward force of F 2 kip, a centrically compressive force P = 64 kip, and a torsional moment T 20 kipin. (10' in total) 1) Find the position B (determine the distance away from the fixed end) on the top of the shaft for which the stress state is pure shear in the established xyz-system. (6) 2) Is there any point on the bottom of the shaft for which the stress state is also pure shear in the established xyz-system? If so, find such position C. If not, explain your reason. (4) 33 X=? B B * =? C Р