What is buoyancy force? Compare the relative magnitudes of the buoyancy force acting on a body immersed in these media: (a) air, (b) water, (c) mercury, and (d) an evacuated chamber.
What will be an ideal response?
The upward force exerted by a fluid on a body completely or partially immersed in it is called the buoyancy or “lifting” force. The buoyancy force is proportional to the density of the medium. Therefore, the buoyancy force is the largest in mercury, followed by in water, air, and the evacuated chamber. Note that in an evacuated chamber there will be no buoyancy force because of absence of any fluid in the medium.
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What will be an ideal response?
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