Which principle states that the weight lost by an object immersed in a fluid is equal to the weight of the fluid displaced?

Which principle states that the weight lost by an object immersed in a fluid is equal to the weight of the fluid displaced?

• A. Archimedes' principle of buoyancy
• B. Newton's law of gravitation
• C. Pascal's principle
• D. Bernoulli's principle

Answer: (A)

The principle that states that the weight lost by an object immersed in a fluid is equal to the weight of the fluid displaced is known as Archimedes' principle of buoyancy. This principle reveals a fundamental aspect of fluid mechanics: when an object is submerged in a fluid, it experiences an upward buoyant force that is equal to the weight of the fluid that the object displaces. This is a crucial concept for understanding how objects float or sink in water and other fluids, and it helps explain why some objects are buoyant while others are not.

Archimedes’ principle can be illustrated with everyday examples, such as boats floating on water. When a boat is placed in the water, it pushes down on the water and displaces a certain volume of it. The weight of that displaced water creates an upward force against the boat, allowing it to float as long as this upward buoyancy force is greater than or equal to the weight of the boat itself.

Other principles mentioned are relevant to different phenomena: Newton's law of gravitation describes the attraction between masses; Pascal's principle pertains to fluid pressure transmission in confined fluids; and Bernoulli's principle explains fluid dynamic behavior and pressure changes in moving fluids. Each of these principles has distinct applications,