Draw the free-body diagram of the main shaft portion, labeled A, B, and C. Include any unbalanced torque on the shaft that tends to rotate it about the z-axis. In each case, the reaction to the unbalanced torque is taken at the right end of the shaft labeled C. Then draw the complete shearing force and bending moment diagrams for loading in the y–z plane. Also prepare a graph of the torque in the shaft as a function of position along the shaft from A to C.

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Use Figure P3-48. A 200 lb 12 8 B 8 Dimensions in inches 16 600 lb Bearings at A and Cact as simple supports