Archimedes Principle, Buoyancy, Floatation, Pascal's PrincipleA series of free High School Physics Video Lessons from Brightstorm online Physics series.
Archimedes' Principle Archimedes' principle states that the buoyant force on a fluid is equal to the weight of the displaced fluid. To calculate the buoyant force, we use the equation buoyant force = density of fluid x volume of displaced fluid x acceleration due to gravity. In a completely submerged object, the volume of displaced fluid equals the volume of the object. If the object is floating, the volume of of the displaced fluid is less than the volume of the object but the buoyant force = the weight of the object.
Buoyancy Buoyant force is the force that a fluid exerts on a object that is immersed within it. It is called buoyant force because this force is a lifting force, often making the object buoyant. Buoyant force can be calculated using Archimedes' Principle.
Floatation In floatation, the buoyant force equals the weight of the floating object and the volume of the object is always greater than the volume of water displaced. Floatation can be calculated using Archimedes' Principle.
Pascal's Principle According to Pascal's Principle, in a uniform fluid, pressure depends only on height. There can be no pressure gradient except for that caused by liquid pressure. This is seen in hydraulic jacks which are used to lift heavy objects.
Custom Search
We welcome your feedback, comments and questions about this site - please submit your feedback via our Feedback page. © Copyright 2005, 2009, 2010 - onlinemathlearning.com Embedded content, if any, are copyrights of their respective owners.
|
Custom Search