3) An incompressible viscous fluid flows downward with steady flow along a plane tilted. From a certain distance from the top of the plane, the flow is completely developed and of depth h, keeping the free surface parallel to the plane. the speed does not is a function of the distance measured along the plane. Knowing the depth of the fluid, determine the mass flow per unit width of flow Distribution input Liquid film - Entrance of: liquid Reservoir Distribution output Direction of severity