A bowl of water has a flat base of area A = 19.5 cm2 and rests on a table. The height of the water is h = 11.4 cm, the weight of the water is 5.00 N, and the weight of the bowl is negligible (see figure below). (a) Find the force exerted on the base of the bowl by the water in contact with it. (Consider the water directly above the base of the bowl.) (b) Find the force exerted on the base of the bowl by the surface of the table. (c) If the base of the bowl is in equilibrium, why are the answers to (a) and (b) not the same?
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 bowl of water has a flat base of area A = 19.5 cm2 and rests on a table. The height of the water is h = 11.4 cm, the weight of the water is 5.00 N, and the weight of the bowl is negligible (see figure below).
(b) Find the force exerted on the base of the bowl by the surface of the table.
(c) If the base of the bowl is in equilibrium, why are the answers to (a) and (b) not the same?
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