Tuesday, June 8, 2010
Archimedes’ Principle
Archimedes Principle states that when a body is wholly or partially immersed in a fluid it experiences an upthrust equal to the weight of the fluid displaced.
Buoyant force
Buoyant force is an upward force exerted by a fluid on an object immersed in it.
Principle of Floatation:
•Displaced volume of fluid = volume of the object that immerse in the fluid.
•If weight of the object > upthrust, the object will sink into the fluid.
•If weight of the object = upthrust, the object is in balance and therefore float on the surface of the fluid.
Density of Object < Density of water: Partially Immerse
Upthrust = Weight
Upthrust, F = ρliquidVliquidg
Weight, W = mg =ρobjectVobjectg
Density of Object < Density of water: Fully Immerse
F = T + W
F = Upthrust
T = Tension of the string
W = Weight
Upthrust, F = ρliquidVliquidg
Weight, W = mg =ρobjectVobjectg
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revision laa!hehe.
ReplyDeletededicated for puan linda toh!