Drawn below is a large tank of water with density 1000 kg/m'. A pipe with a diameter of 0.05 m is placed in the tank and its end opens up 5 m below the surface. (a) If there is no fluid flow, what is the gauge pressure (i.e. neglect atmospheric pressure) at the opening of the pipe? (b) If water is now pumped from the pipe at the volume flow rate of 0.01 m/s, what is the linear velocity, v, of the fluid in the pipe? (c) What is the pressure at the opening of the pipe when this pump is on? pump 5 m
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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