Answers

2016-01-16T15:01:38+05:30
Buoyancy is an upward force on an object immersed in a fluid (i.e., a liquid or a gas), enabling it to float or at least to appear lighter. Buoyancy is important for many vehicles such as boats, ships, balloons, and airships.
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2016-01-16T15:13:11+05:30
It is a force excerpted by fluids when a body when  it is as buoyant .it means when is is neither sink nor flots upon the liquid.it is a opposite force acting on the body by the fluid
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