Question

For a fluid at rest:-

• A. The shear stress is zero only on the horizontal plane
• B. The shear stress is zero
• C. The shear stress in maximum on a place inclined at 45° to the horizontal
• D. The shear stress depends upon the co-efficient of viscosity

Answer 1

Answer:

B. The shear stress is zero

A fluid at rest cannot resist shear stress and any applied shear stress, no matter how small, will result in the motion and the fluid. Thus the shear zero for a fluid at rest.