In Fig. P.14.39 is shown a section of a thin- walled member made from an aluminum...

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In Fig. P.14.39 is shown a section of a thin- walled member made from an aluminum aloy. If the thick- ness is .050 in., what is the stress and rate of twist for a torque of 1000 in.-lb? Take G for this material as 4 X 106 psi Assume no buckling 3* 10 Figure P.14.39. In Fig. P.14.39 is shown a section of a thin- walled member made from an aluminum aloy. If the thick- ness is .050 in., what is the stress and rate of twist for a torque of 1000 in.-lb? Take G for this material as 4 X 106 psi Assume no buckling 3* 10 Figure P.14.39.