Suppose a 2.30 N force can rupture an eardrum having an area of 1.11 cm2. (a) Calculate the maximum tolerable gauge pressure inside the eardrum (in the middle ear) in N/m². (Pressures in the middle ear may rise when an infection causes a fluid buildup. Use 13.6 x 103 kg/m³ as the density of mercury.) |N/m² Convert this value to mm Hg. mm Hg (b) At what depth in fresh water would this person's eardrum rupture, assuming the gauge pressure in the middle ear is zero? m
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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