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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Buoyant force is due to the .... (choose one correct answer)
A. Pressure difference in the fluid.
B. Partially or fully submerged object in the fluid
C. Volume of the submerged object.
D. Depth in the fluid
Buoyant force is the upward force which is exerted on an object by the fluid when it is partially or fully submerged in the fluid. In any fluid as the object goes deeper it experiences greater pressure due to overlying weight of the fluid. Thus it is known that there is a pressure difference in the fluid (that is pressure at the bottom is greater than that of the surface)
This difference in pressure exert an upward force on the object called buoyant force.
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