You hook a solid metal block of iron (iron density = 7800 kg/m^3 ) which has a volume of Viron=6.4×10^−5 m 3 onto a string and dip it into a beaker of water (water density = 1000 kg/m^3 ). The iron is partially submerged in the water and when the iron block is floating at rest, you find that the tension of the string is 4.5 N. a) Draw a properly labeled force diagram of the iron block. b) Find the fraction of the iron that is submerged in the water.
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.
You hook a solid metal block of iron (iron density = 7800 kg/m^3 ) which has a volume of Viron=6.4×10^−5 m 3 onto a string and dip it into a beaker of water (water density = 1000 kg/m^3 ). The iron is partially submerged in the water and when the iron block is floating at rest, you find that the tension of the string is 4.5 N.
a) Draw a properly labeled force diagram of the iron block.
b) Find the fraction of the iron that is submerged in the water.
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