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1. |
A shaft subjected to torsion experiences a pure shear stress τ on the surface. The maximum principal stress on the surface which is at 45° to the axis will have a value |
A. | τ cos 45° |
B. | 2τ cos 45° |
C. | 2τ sin 45°cos 45° |
D. | τ cos2 45° |
Answer» D. τ cos2 45° | |