Question

Define buoyant force.Name two factors on which it depends.

Answer 1

1. Buoyant force:- The property of the fluid, due to which it exerts an upward force on any object immersed in the fluid is called buoyancy.
2. The upward force on an immersed object is called the buoyant force or upthrust or force of buoyancy.

Factors on which Buoyant force depends are:-

1. The buoyant force exerted by a fluid on an object is directly proportional to the volume of immersed part of the object in the fluid:- It means that as the volume of the given object immersed in the fluid increases, the magnitude of upward buoyant also increases.
2. The buoyant force exerted by a fluid on an object is directly proportional to the density of the fluid:-Higher the density of a fluid higher will be the upthrust force being exerted on the immersed object.
3. The buoyant force is independent of the nature of the immersed object.