Equation for shear stress (τ) for fluid flowing on stationary plate - Heat Transfer

Q.  Consider a fluid of height H, flowing on a stationary plate as shown in figure. The top most layer of the fluid is moving with velocity U0.
Which of the following condition is correct for the given condition?
- Published on 11 Aug 15
Moving-Fluid-on-a-Stationary-Plate.png


a. The shear stress (τ) is directly proportional to (H x U0)
b. The shear stress (τ) is directly proportional to (H / U0)
c. The shear stress (τ) is directly proportional to (U0 / H)
d. none of the above

ANSWER: The shear stress (τ) is directly proportional to (U0 / H)

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