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3. A 2014 T-4 aluminum hollow drive shaft has an outside diameter of 3 in, an...

3. A 2014 T-4 aluminum hollow drive shaft has an outside diameter of 3 in, an inside diameter of 2.9 in, and a length of 10.0 ft. It transmits a power of 120 hp at 300 rpm. Find the following (include units with your answers):

a) the maximum torsional shear stress in the shaft (ksi)=  

b) the angle of twist (deg)=  

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