You are designing a diving bell to withstand the pressure of seawater at a depth of 240 mm. What is the gauge pressure at this depth? (You can ignore changes in the density of the water with depth.) Express your answer in pascals. At this depth, what is the net force due to the water outside and the air inside the bell on a circular glass window 31.0 cmcm in diameter if the pressure inside the diving bell equals the pressure at the surface of the water? (You can ignore the small variation of pressure over the surface of the window.) Express your answer in newtons.
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.
You are designing a diving bell to withstand the pressure of seawater at a depth of 240 mm.
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