Topic: Strength of Materials
Radius of the Mohr circle of stress is numerically equal to
- A. Maximum normal stress
- B. Maximum shear stress
- C. Average normal stress
- D. Average shear stress
Answer: B. Maximum shear stress
Explanation: In a Mohr's circle for a 2D stress state, the radius is calculated as $sqrt{((sigma_x - sigma_y)/2)^2 + tau_{xy}^2}$, which is identically the formula for the maximum in-plane shear stress.