<Homework Assignment 32 Problem 11.45 2012 Review The shaft is supported by journal bearings at A and B that exert force components only in the and z directions. 4 in. F-200 lb 250 lb 4 in. F 4 in. in. in F 8 in. 50 lb in. ▼ Part A If the allowable normal stress for the shaft is allow - 19 ksi, determine the smallest diameter of the shaft. Use the maximum distortion energy theory of failure. Express your answer to three significant figures and include appropriate units. Id= 1 Value Units