lukecandy Posted July 25, 2013 Share Posted July 25, 2013 Discuss #physics #yoloswag #2013 Link to comment Share on other sites More sharing options...
∞Ramses Posted July 25, 2013 Share Posted July 25, 2013 Density/density of fluid = weight/weight of moved fluid Link to comment Share on other sites More sharing options...
There Posted July 25, 2013 Share Posted July 25, 2013 Density/density of fluid = weight/weight of moved fluid explain. Link to comment Share on other sites More sharing options...
∞Ramses Posted July 25, 2013 Share Posted July 25, 2013 Then I need to draw. And I'm busy with a paper about equal opportunities in the educational system. Link to comment Share on other sites More sharing options...
There Posted July 25, 2013 Share Posted July 25, 2013 Okay ): You're not giving me an equal opportunity. Link to comment Share on other sites More sharing options...
~shenanigans Posted July 25, 2013 Share Posted July 25, 2013 The most practical application of Archimedes' principle is buoyancy. If you submerge an object in a fluid, there is a buoyancy force which acts on the object, equal in magnitude to the weight of the liquid displaced, and opposite in direction to gravity. For example, if you submerge a balloon in water, the force will act to send the balloon upwards, while gravity seeks to bring the balloon down. The amount of this force will be the weight of the displaced fluid, in this case water. If the balloon has volume V (units of m^3), and the fluid water has density 1000kg/m^3, then the mass displaced would be 1000*V. The weight displaced would be 1000*V*g, where g is the acceleration due to gravity. A further application is finding the apparent weight while immersed in the fluid, which would be to subtract the force of gravity from the buoyancy force. It is by this reason that dense objects sink in water, while light objects float. Link to comment Share on other sites More sharing options...
lukecandy Posted July 26, 2013 Author Share Posted July 26, 2013 The most practical application of Archimedes' principle is buoyancy. If you submerge an object in a fluid, there is a buoyancy force which acts on the object, equal in magnitude to the weight of the liquid displaced, and opposite in direction to gravity. For example, if you submerge a balloon in water, the force will act to send the balloon upwards, while gravity seeks to bring the balloon down. The amount of this force will be the weight of the displaced fluid, in this case water. If the balloon has volume V (units of m^3), and the fluid water has density 1000kg/m^3, then the mass displaced would be 1000*V. The weight displaced would be 1000*V*g, where g is the acceleration due to gravity. A further application is finding the apparent weight while immersed in the fluid, which would be to subtract the force of gravity from the buoyancy force. It is by this reason that dense objects sink in water, while light objects float. If an object is floating but partly submerged, the water displaced has an equal mass to the submerged part of the floating object. Link to comment Share on other sites More sharing options...
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