A hollow aluminum tube used is a roof structure has an outside diameter d2 and inside diameter d1. The tube is 2.5m long and the aluminum has a shear modulus of G=28 GPa. a.If the tube is twisted in pure torsion by torques acting at the ends,what is the angle of twist in degrees when the max shear stress is 50MPa? b.What diameter “d” is required for a solid shaft to resist the same torque with the same maximum stress? d1 = 90 (mm) d2 = 110 (mm

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Pressure and Stress