Question 2 (4 marks) A solid 1.50 in. x 1.50 in. square shaft is made of steel [G = 11,500 ksi] that has an allowable shear stress of 16 ksi. The shaft is used to transmit power from a tractor to farm implements, and it has a length of (60+YZ/5) inches. Determine: (a) the largest torque 7 that may be transmitted by the shaft. (b) the angle of twist in the shaft at the torque found in part (a). (c) Repeat (a) and (b) with a 2 in. x 2 in. square shaft with same material. Navigate to MecMovies M7.3: Step-by-Step Examples, Screen 9 of 10, and choose the first (top left) "Miscellaneous Beams, Part 1". Shear-Force and Bending- Moment Diagrams Step-by-step examples P1 w1 B b C P2 a. Follow the prompts and construct the shear diagram and moment diagram. Include a screen print of this (sample shown above to far right) but make sure values are large and legible. (2 marks) b. What is the minimum required section modulus, using structural steel (ASTM A-992) and a Factor of Safety of 2.0? (2 marks) c. Using this modulus and referring to Appendix B, specify the most economical (smallest) W410 and W360 sections. Also calculate maximum bending stress magnitude in these two selected beam sections (3 marks) d. What is the minimum required section modulus, using structural steel (ASTM A-36) and the same factor of safety? Again, specify the smallest W410 and W360 sections and corresponding maximum bending stress magnitude. (3 marks)