3. A liquid layer separates two plane surfaces as show. The lower surface is stationary and the upper surface moves downward at constant speed V. The moving surface has width w, perpendicular to the plane of the diagram (w>>L). The incompressible liquid layer, of density B, is squeezed from between the surfaces. Assume the flow is uniform at any cross section and neglect viscosity as a first approximation.
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Step 1:** Apply the conservation of mass equation: \[\frac{d}{dv} \int_{c} v \rho dA + \int_{s} \rho v dA = 0\] ** Show more…
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