Question

Buoyant force acting on an object is equal to the ___

• A. Mass of the solid
• B. Weight of the solid
• C. Weight of the liquid displaced by the object
• D. Mass of the liquid displaced by the object.

Answer 1

Answer: (C)

Weight of the liquid displaced by the object

Buoyant force acting on an object is equal to weight of liquid displaced by the solid i.e.

Buoyant force $F_B$:

$F_B=V_{dis}\times {\rho }_l\times g$

here $V_{dis}$ is the volume of displaced water.

${\rho }_l$ is density of liquid

$g$ is acceleration due to gravity.