Here's a breakdown:

* Buoyancy is an upward force exerted by a fluid (liquid or gas) that opposes the weight of an object submerged in or floating on the fluid.

* This force arises from the difference in pressure between the bottom and top of the object.

* The buoyant force is equal to the weight of the fluid displaced by the object. This is known as Archimedes' Principle.

If the buoyant force is greater than or equal to the weight of the object, the object will float. If the buoyant force is less than the weight of the object, the object will sink.