The shaft is made of AISI 1035 CD steel. a.) Draw a free-body-diagram of the beam shown then determine reactions. b.) Draw a SFD, BMD, and a torque diagram, (for both y and z). c.) Determine the the stress using = BM for each section. d.) At the most critical point, use a conservative failure theory, with a design factor of 2, to determine the minimum shaft diameter. 100 250 dia. 300 100 45 N 300 N/ 20 dia. 150 300 dia.