Question

When a cantilever shaft of brittle material is subjected to clockwise twisting moment at the free end, the possible crack propagation will be

• A. ${45}^o$ clockwise with respect to the axis of shaft
• B. ${45}^o$ anticlockwise with respect to the axis of shaft
• C. Perpendicular to the axis
• D. Parallel to the axis

Answer 1

The correct option is A ${45}^o$ clockwise with respect to the axis of shaft