an open tube of length L 1.8 m and cross-sectional area A = 4.6 cm2 is fixed to the top of a cylindrical barrel of diameter D = 1.2 m and height H = 1.8 m. The barrel and tube are filled with water (to the top of the tube). Calculate the ratio of the hydrostatic force on the bottom of the barrel to the gravitational force on the water contained in the barrel. Why is that ratio not equal to 1.0? (You need not consider the atmospheric pressure.)
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.
an open tube of length
L 1.8 m and cross-sectional area A =
4.6 cm2 is fixed to the top of a cylindrical barrel
of diameter D = 1.2 m and height H =
1.8 m. The barrel and tube are filled with
water (to the top of the tube). Calculate
the ratio of the hydrostatic force on the
bottom of the barrel to the gravitational
force on the water contained in the barrel.
Why is that ratio not equal to 1.0? (You need
not consider the atmospheric pressure.)
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