PROBLEM 3.54 The composite shaft shown is to be twisted by applying a torque T at end A. Knowing that the modulus of rigidity is 11.2 × 106 psi for steel and 4 × 106 psi for aluminum, determine the largest angle through end A may be rotated, if the following allowable stresses are not to be exceeded: ?steel = 8000 psi and ?aluminum = 6000 psi.


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