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°


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