Archimedes' Principle: Definition and Explanation

Definition: Archimedes' principle is a scientific principle that explains why objects float or sink in a fluid. It states that the buoyant force acting on an object submerged in a fluid is equal to the weight of the displaced fluid.

Explanation:

The buoyant force is a force that is exerted by a fluid on an object that is submerged in it. This force is always directed upwards, perpendicular to the surface of the fluid. It is a result of the pressure difference between the top and bottom of the object.

The weight of the displaced fluid is the weight of the fluid that would occupy the same volume as the submerged object. This weight is equal to the buoyant force acting on the object.

According to Archimedes' principle, if the weight of the object is less than the weight of the displaced fluid, the object will float. If the weight of the object is greater than the weight of the displaced fluid, the object will sink.

Example:

Consider a block of wood that is placed in a container of water. The weight of the block of wood is less than the weight of the same volume of water. When the block is placed in the water, it displaces some of the water, which exerts an upward buoyant force on the block. This buoyant force is equal to the weight of the water displaced by the block. If this buoyant force is greater than the weight of the block, the block will float.

On the other hand, if the weight of the block is more than the weight of the displaced water, the buoyant force will be less than the weight of the block and the block will sink.

In conclusion, Archimedes' principle is a fundamental concept in physics that explains why objects float or sink in fluids. It has many practical applications, including the design of ships, submarines, and hot air balloons.

Archimedes principle:-It state that buoyant force that is exerted on a body immersed in a fluid whether fully or partially submerged is equal to the wieght of the fluid that the body displaces. Upthrust = Buoyant force = Weight of the displaced It's example or applications: Floating of aquatic animals, floating of boat, submarine,etc.