A 20 8 D 10 cm E B 40 8 20 cm 30 g, 6 cm 40 8 20 g 10 cm 10 cm KEY CONCEPT FIGURE 13.13 The buoyant force on an object is the same as the buoyant force on an equal volume of fluid. (a) Imaginary boundary around a parcel of fluid (b) Real object with same size and shape as the parcel of fluid - The buoyant force is due to the surrounding fluid pushing on the parcel. | These forces are equal because the parcel is in static equilibrium. AF The buoyant force on the object is the same as on the parcel of fluid because the surrounding fluid has not changed.
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.
The five blocks have the masses and volumes shown. Using what you learned as shown, rank in order, from least to greatest, the buoyant forces on the blocks.
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