The direction of shear stress arrows in Mohr's circle is determined by the convention used in mechanics of materials. In standard practice, shear stress is represented as positive when it causes a clockwise rotation of the material element. This convention ensures consistency in analysis and interpretation of stress states. The discussion highlights the importance of adhering to established conventions to avoid confusion in engineering applications.
PREREQUISITESMechanical engineers, civil engineers, students studying mechanics of materials, and professionals involved in structural analysis will benefit from this discussion.