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  3. a countershaft carrying two vbelt pulleys is shown in the...

Question: a countershaft carrying two vbelt pulleys is shown in the...

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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 20 percent of the tension on the tight side. 1. Compute the tensions in the belt on pulley B, assuming the shaft is running at a constant speed Find the magnitudes of the bearing reaction forces, assuming the bearings are simple supports Draw shear-force and bending-moment diagrams for the shaft. If needed, make one set for the horizontal plane, and another set for the vertical plane. At the point of maximum bending moment, determine the bending stress and the torsional shear stress. At the point of maximum bending moment, determine the principal stresses and the a. b. c. d. e. maximum shear stress. 150 dia. 1200 N 200 N T. 25 dia. Ti 150 200 dia 1 200 200
150 dia. 1200 N 200 N T. 25 dia. T. 200 dia. 200 2 200
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