1.  

Assuming that the flow is slow and steady, and the velocity varies linearly in the liquid layers, what is the shear stress on the upper surface of the plate? Assuming that the flow is slow and steady, and the velocity varies linearly in the liquid layers, what is the shear stress on the lower surface of the plate? If the top fluid is water (water = 1 mPa.s) and the bottom fluid is oil (Hoil = 30 mPa.s), estimate the magnitude of the force for V = 2 mm.s-? Make sure to write the force definition using variables and then substitute to find a value for F.