Answers

2016-02-24T19:54:11+05:30
"When an object is partially or completely immersed in fluid it experiences an upward force that is equal to the weight of fluid displaced "

APPLICATION 

It is used in hydrometers and lactometers
It is also used in designing ships and submarines 

A hot air balloon rises and floats due to the buoyant force (when the surrounding air is greater than its weight)
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