January 23, 2023
In Mr. Leicher’s Grade 11 Physics class, students investigated Archimedes’ Principle for an object that is denser than water and an object that is less dense than water.
Archimedes’ Principle states that that an object floating or fully immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object. The buoyant force on an object immersed in a liquid can also be determined by weighing an object in air and then in water. The apparent loss of weight of the object is equal to the buoyant force of the water.
Fun Fact: Archimedes was the person who ran naked through the streets of Syracuse shouting “Eureka! Eureka! I have found it!”. (He was at a bathhouse and noticed the water level rose when someone stepped in. This related to the volume of the water displaced must be equal to the volume of the parts of the body that was submerged).