Flying Circus of Physics g-LOC in dogfights. When a pilot takes a tight turn at`high speed in a modern fighter airplane, the blood pressure at the brain level decreases, blood no longer perfuses the brain, and the blood in the brain drains. If the heart maintains the (hydrostatic) gauge pressure in the aorta at 102 torr (or mm Hg) when the pilot undergoes a horizontal centripetal acceleration of 3.4g, what is the blood pressure (in torr) at the brain, 32 cm radially inward from the heart? The perfusion in the brain is small enough that the vision switches to black and whit. IItupnelvicionland the pile LOC "a inducod locc of " Plood doncity ic
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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