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4. | The velocity distribution for fluid flow over a flat plate is given by u=2y-6y2 in which u is the velocity in metre per second at a distance of y metre above the plate. Determine the shear stress at y=0.15m.Take dynamic viscosity of fluid as 8.6 poise. | |
A. | 0.172 N/m2 | |
B. | 0.344 N/m2 | |
C. | 0.086 N/m2 | |
D. | None of the mentioned | |