Question

Examples with explanation of buoyant force

Answer 1

The upward force acting on a body immersed in a fluid is called upthrust or buoyant force and the phenomenon is called buoyancy.

Answer 2

Buoyancy is, basically, the ability of something to float or rise in a fluid. Simple as that. More scientifically, buoyancy refers to a force that arises from the pressure exerted on an object by a fluid (a liquid or a gas). Since it's a force, we call it the buoyant force. 
examples
1.we feel lighter when we are in water. that is due to buoyant force.
2.objects float on water