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.
A mercury manometer (r = 13,600 kg/m3) is connected
to an air duct to measure the pressure inside. The
difference in the manometer levels is 15 mm, and the atmospheric
pressure is 100 kPa. (a) Judging from Fig. P2–50,
determine if the pressure in the duct is above or below the
atmospheric pressure. (b) Determine the absolute pressure in
the duct.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
