A composite shaft with length L-40 in is made by fitting an aluminum sleeve (Ga-4 103 ksi) over a steel core ( G, 11 103 ksi), as illustrated below. The composite shaft is fixed against rotation at the wall and has outside diameter da 5 in. The steel core has diameter d, 4in. A torque T 2 kip. in is applied at B. At stul B % Matlab input: L=40; Ga = 4*10^3 ; Gs = 11*10^3 ; da = 5; ds = 4; Tb = 2; Determine the magnitude of the angle of twist at end B, ie, . rad Try question again Correct answer 0.0001898586459996515 rad