Consider a submarine at a depth 100 m below the ocean water surface. The submarine has two side windows A and B. Window A has a radius of 0.25 m. Window B has a radius of 0.15 m. Both windows are at the same depth. 100 m The density of water is 1000 kg/m³ and atmospheric pressure is 1.01 x 105 Pascal. Determine the pressure experienced by the submarine at this depth. 2.01 x 105 Pa 110800 Pa 972900 Pa 1.081 x 106 Pa 9.8 x 105 Pa Compare the forces exerted on windows A and B, FA and Fg O FA = FB O FA< FB O FA > FB %3D

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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.