A motor delivers 275 hp at 1000 rpm to the end of a shaft (see figure). The
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Determine the required diameter d of the shaft if the allowable shear stress is 7500 psi and the angle of twist between the motor and gear C is limited to 1.5°. (Assume G = 11.5 ( 106 psi, L1 = 6 ft, and L2 = 4 ft.)
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Motor Li PROBS. 3.7-9 and 3.7-10
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