What is the definition of buoyancy?

Definition of buoyancy. 1a : the tendency of a body to float or to rise when submerged in a fluid testing an object's buoyancyb chemistry : the power of a fluid to exert an upward force on a body placed in it the buoyancy of water; also : the upward force exerted. read more

buoyancy definition. The force that causes objects to float. According to the principle of Archimedes, when a solid is placed in a fluid (a liquid or a gas), it is subject to an upward force equal in magnitude to the weight of the fluid it has displaced. read more

Note that the object is floating because the upward force of buoyancy is equal to the downward force of gravity. In science, buoyancy ( /ˈbɔɪ.ənsi, -əntsi/ or /ˈbuːjənsi, -jəntsi/;) or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. read more