Air is streaming past a horizontal air plane wing such that its speed is 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of air is 1-3 kg/m^3. Find the difference in the pressure between the top and the bottom of the wing. If the wing is 10.0 m long and has an average width of 2.0 m, then find the gross lift of the wind on air plane.
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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