A sump pump (used to drain water from the basement ofhouses built below the water table) is draining a floodedbasement at the rate of 0.750 L/s, with an output pressure of3.00×105 N/m2 . (a) The water enters a hose with a3.00-cm inside diameter and rises 2.50 m above the pump.What is its pressure at this point? (b) The hose goes over thefoundation wall, losing 0.500 m in height, and widens to 4.00cm in diameter. What is the pressure now? You may neglectfrictional losses in both parts of the problem.
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 sump pump (used to drain water from the basement of
houses built below the water table) is draining a flooded
basement at the rate of 0.750 L/s, with an output pressure of
3.00×105 N/m2 . (a) The water enters a hose with a
3.00-cm inside diameter and rises 2.50 m above the pump.
What is its pressure at this point? (b) The hose goes over the
foundation wall, losing 0.500 m in height, and widens to 4.00
cm in diameter. What is the pressure now? You may neglect
frictional losses in both parts of the problem.
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