Solve Prob. 8.107 assuming that the flat belt and drums are replaced by a V belt and V pulleys with a =36. (The angle a is as shown in Fig. 8.15a.) Problem 8.107: In the pivoted motor mount shown, the weight W of the 175-lb motor is used to maintain tension in the drive belt, knowing that the coefficient of static friction between the flat belt and drums A and B is 0.40, and neglecting the weight of platform CD, determine the largest couple which can be transmitted to drum B when the drive drum A is rotating clockwise.
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