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.
A conveyor belt carries a cup of coffee that is 10 cm deep and 6 cm in diameter and the coffee it contains reaches 3 cm below the edge when it is at rest. (a) Calculate the pressure at the point A when the cup of coffee is at rest, (b) Assuming that the cup acquires a uniform acceleration horizontal of 7m/s2, determine whether it will spill or not. (c) Calculate the gauge pressure (when in accelerated motion) at point A if the density of the coffee is 1010 kg/m3
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