what is buoyant force. defination of buoyant force
Answers
The upward force acting on an object in water or other fluids or gas is called buoyant force.
Buoyant force depends on two factors :-
1] Volume of the object => More the buoyant force when the volume of dipping object is more.
2] Density of liquid => More the buoyant force, more the density of liquid.
Explanation:
Buoyant Force
When an object is immersed in a liquid , it experiences an upward force and that upward force is called buoyant force . Thus , the upward force acting on an object immersed in a liquid is called Bouyant Force. It is due to the upward buoyant force exerted by a liquid that the weight of an object appears to be less in the liquid then its actual weight in air. The upward force exerted by a liquid is also known as upthrust. In other words, the Bouyant Force is also known as upthrust. It is due to the upward force exerted by water that we are able to swim in water and ships float in water. If there were no upward force of water , we will not able to swim and the ships would also sink. It is the buoyant force which makes the heavier objects seem lighter in water .
An object immersed in a liquid appears to lose weight and become lighter due to the upward buoyant force of the liquid. This means that as more and more volume of the object is immersed in a liquid ,the upward buoyant force acting on it increases but once the object is completely immersed in a liquid , then lowering it further in the liquid does not increase the buoyant force .
This means that the maximum upward buoyant force act on an object when it is completely immersed in the liquid.