A. A cylindrical disk of wood weighing 50.0 [N] and having a diameter of D = 20.0 [cm] floats on a liquid of density p = 0.850 [g/cm³]. The cylinder of liquid is h = 50.0 [cm] high and has a diameter that is the same as that of the wood. What is the gauge pressure halfway down the liquid? h
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.
![2. My neck, my back (Likido)
A.
A cylindrical disk of wood weighing 50.0 [N] and having a diameter of D =
20.0 [cm] floats on a liquid of density p = 0.850 [g/cm³]. The cylinder of liquid is h =
50.0 [cm] high and has a diameter that is the same as that of the wood. What is the
gauge pressure halfway down the liquid?
h
B.
For your science exhibit, you want to make a block of wood float at the
interface between a layer of oil of unknown density Poil, and water (Pwater =
1000 [kg/m³]) inside a container as shown. The density of the wood is Pwood =
950. [kg/m³]. What must be the density of the oil so that only 40.0% of the wood is
submerged in water?
C.
Water (Pwater = 1000. [kg/m³]) is flowing through a
bent cylindrical pipeline shown. The radii of the pipe at points
1 and 2 are 0.300 [m] and 1.00 [m], respectively. The volume
flow rate through the pipeline is 3.50 [L/s]. If the pressure at
point 1 in the pipe is 350 [kPa], what is the pressure at point
2, located 5.00 [m] above point 1?
1
2
wood
Liquid
D
Oil
wood
water
5.00 [m]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a0f46c3-a906-48e6-aa36-c841026d09c8%2F109c745d-c1ba-4070-a17e-6b2c859687d5%2Fmusn0bp_processed.jpeg&w=3840&q=75)
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