(Solved): Problem 4-38 A countershaft carrying two V-belt pulleys is shown in the figure. Pulley A receives ...

Problem 4-38 A countershaft carrying two V-belt pulleys is shown in the figure. Pulley $$A$$ receives power from a motor through a belt with the belt tensions shown. The power is transmitted through the shaft and delivered to the belt on pulley $$B$$. Assume the belt tension on the loose side at $$B$$ is 15 percent of the tension on the tight side. For the steel countershaft shown below, assume the bearings have a maximum slope specification of $$0.062^{?}$$ for good bearing life. Determine the minimum shaft diameter. Dimensions in millimeters.