law of Archimedes

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Definition
  1. Noun:
    • A principle of physics (hydrostatics): The Law of Archimedes states that when a body is fully or partially submerged in a fluid, it experiences an upward buoyant force. The magnitude of this force is equal to the weight of the fluid that the body displaces.
Usage
  • The Law of Archimedes is a fundamental concept for understanding why objects float or sink.
  • Engineers apply the Law of Archimedes when designing ships and submarines.
  • A simple experiment demonstrating the Law of Archimedes involves measuring the weight of an object in air and then in water.
Examples
  • According to the Law of Archimedes, a steel ship floats because it displaces a volume of water whose weight equals the ship's total weight.
  • The Law of Archimedes explains why you feel lighter when you are in a swimming pool.
  • Calculating the buoyant force on a submerged object requires a direct application of the Law of Archimedes.
Advanced Usage
  • "Archimedes' principle": This is the most common synonymous term for the Law of Archimedes. It is often used interchangeably.
    • The stability of a vessel is analyzed using Archimedes' principle.
  • The principle is foundational in fluid mechanics and is a specific case of the more general differential equation for fluid pressure variation.
Variants and Related Words
  • Archimedes' principle (n): The synonymous term for the Law of Archimedes.
  • Buoyancy (n): The upward force described by the Law of Archimedes.
  • Buoyant force (n): The specific force equal to the weight of the displaced fluid.
  • Displacement (n): The act of moving fluid aside or the volume of fluid moved.
Synonyms
  • Archimedes' principle
  • Principle of buoyancy
Related Phrases
  • To obey the Law of Archimedes: To behave in accordance with this physical principle.
    • Any object placed in a fluid will obey the Law of Archimedes.
  • To be governed by the Law of Archimedes: To have its floating or sinking behavior determined by this law.
    • The behavior of a hot air balloon is governed by the Law of Archimedes for gases.
Noun
  1. (hydrostatics) the apparent loss in weight of a body immersed in a fluid is equal to the weight of the displaced fluid

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