Question

Stress at any point in a material is defined as -

• A. Load per unit time
• B. Young's modulus of elasticity per unit strain
• C. Modulus of rigidity
• D. Resisting force per unit area

Answer 1

Answer:

D. Resisting force per unit area

Stress is the internal resistive force to deformation per unit area in solids, while pressure is the amount of force applied per unit area in fluids. Stress can be tensile, compressive, or shear, and can act parallel or perpendicular to the object. The unit of stress is N/m². Pressure is always compressive and acts only perpendicular to the object. Shear stress is used in the viscous flow of fluids.