2. The figure below shows a steel shaft of length L = 1.5 m and diameter d = 25 mm that carries a distributed torque of intensity (torque per unit length) t = tB(x/L), where tg = 200 N.m/m. Determine (1) the maximum shear stress in the shaft; and (2) the angle of twist. Use G = 80 GPa for steel. y -X 1 =18 B

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