A solid circular steel shaft of diameter 20 mm is enclosed within a brass hollow circular shaft of external diameter 30 mm and internal diameter 20 mm. If the two shafts are rigidly connected and the angle of twist due to a torque of 410 N-m is 2° in a length of 300 mm. Find the value of G for brass if G for steel is 80 GPa. 54.15 GPa O 35.57 GPa O 40.04 GPa 51.12 GPa

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