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BUOYANCY ARCHIMEDES’ PRINCIPLE

BUOYANCY ARCHIMEDES’ PRINCIPLE. Objects with less density will float on fluids with greater density. Objects with more density will sink in fluids with less density. Buoyancy. Buoyancy : the upward force of a fluid that pushes an object up. Force : a push or pull.

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BUOYANCY ARCHIMEDES’ PRINCIPLE

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  1. BUOYANCYARCHIMEDES’ PRINCIPLE

  2. Objects with less density will float on fluids with greater density. Objects with more density will sink in fluids with less density.

  3. Buoyancy Buoyancy: the upward forceof a fluid that pushes an object up Force: a push or pull Fluid: a substance that flows, that has an indefinite shape (takes the shape of its container). Liquids & gases are fluids. Buoyancyis why objects completely or partly submerged in a liquid seem to weigh less than they do in air.

  4. Buoyancy / Density Relationship The denser the fluid is, the more buoyant forceit has. Think about air and water… Both are fluids, but water has a much greater buoyant force than air, because it is more dense.

  5. Archimedes’ Principle "Any object, wholly or partly immersed in a fluid, is buoyed up by a force equal to the volume of the fluid displaced by the object.” OR The volume of an object in water is equal to the volume of the displaced water. Ancient Greek mathematician, physicist, engineer, inventor, and astronomer. 250 BC

  6.  If the mass of the water displaced is lessthanthe mass of the object, the object will sink. Otherwise the object will float, with the mass of the water displaced equal to or greater than the mass of the object. Archimedes' Principle explains why steel ships float

  7. Gravity vs. Buoyancy-- which one wins? Think of gravity & buoyancy as 2 opposing forces. Gravity pullsdown, buoyancy pushes up. If weight (gravity) is greater than the displaced water (buoyancy), the object will sink. GB , object sinks If the displaced water (buoyancy) is greater than the weight (gravity), the object will float. GB,object floats

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