1. An 80-kg metal cylinder, 2.0 m long and with each end of area 25 cm?, stands vertically on one end. What pressure does the cylinder exert on the floor? (Ans. 3.1 x 105 Pa)
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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Lesson-Guide-Physics 2.pdf
Day 6:
Date done:
Problem Set No.6
PS NO: 06
Name:
Grade:
Section:
Solve the following problems. (Show your illustrations and solutions)
1. An 80-kg metal cylinder, 2.0 m long and with each end of area 25 cm?, stands vertically on
one end. What pressure does the cylinder exert on the floor? (Ans. 3.1 x 105 Pa)
2. A reservoir dam holds an 8.00-km? lake behind it. Just behind the dam, the lake is 12.0m
deep. What is the water pressure (a) at the base of the dam and (b) at a point 3.0 m down
from the lake's surface? (a. 118 kPa; b. 29 kPa)
3. A barrel will rupture when the gauge pressure within it reaches 350 kPa. It is attached to
the lower end of a vertical pipe, with the pipe and barrel filled with oil (p= 890 kg/m³). How
long can the pipe be if the barrel is not to rupture? (40.1 m)
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