Question

Explain buoyancy and buoyant force.

Answer 1

Hint: We should note that when we immerse an object into the water the object tends to rise on the surface. But we know that there is the gravitational force, it keeps pulling down the object, and some objects tend to come to the surface of the water. So we will explain the definition of buoyancy from the above-given experiment. Similarly. The upward force that is pulled by the fluid against the weight of a part or any fully submerged item is also known as upthrust.

Complete step by step answer:
As we know that buoyancy and buoyant force both are interrelated.
So the upward force which is exerted on the object is known as the buoyant force. Therefore we should know that buoyancy is a phenomenon where an object when immersed in water, whether partial or full, experiences an upward force that tends to bring the body of the object towards the surface of the water.
We know that the difference in pressure occurring on the different sides of an item that is submerged in the water causes buoyancy. The buoyant force is the other name of this process.
Thus we can say that the phenomenon of buoyancy is caused by the Buoyant force.
Hence we can say that the buoyant force applied on the object with the volume $V$ when immersed in water is equal to the upward force acting on an object. We can write this numerically which is equal to $pgV$ .

Note:
We should note that the buoyant force which is applied to an object is only proportional to the volume of the body fully or partially immersed in water. From the above definition we can conclude that the weight of the displaced liquid by the body of an object is equal to the buoyant force which is acting on the body.