Every few years, winds in Boulder, Colorado, attainsustained speeds of 45.0 m/s (about 100 mi/h) when the jetstream descends during early spring. Approximately what isthe force due to the Bernoulli effect on a roof having an areaof 220 m2 ? Typical air density in Boulder is 1.14 kg/m3 ,and the corresponding atmospheric pressure is8.89×104 N/m2 . (Bernoulli’s principle as stated in the textassumes laminar flow. Using the principle here produces onlyan approximate result, because there is significantturbulence.)
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.
Every few years, winds in Boulder, Colorado, attain
sustained speeds of 45.0 m/s (about 100 mi/h) when the jet
stream descends during early spring. Approximately what is
the force due to the Bernoulli effect on a roof having an area
of 220 m2 ? Typical air density in Boulder is 1.14 kg/m3 ,
and the corresponding atmospheric pressure is
8.89×104 N/m2 . (Bernoulli’s principle as stated in the text
assumes laminar flow. Using the principle here produces only
an approximate result, because there is significant
turbulence.)
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