Floating and sinking

Floating and sinking

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Credit: GIPhotoStock/SCIENCE PHOTO LIBRARY

Caption: Floating and sinking. In this photo a wooden (oak) cylinder is floating but a nylon cylinder of the same size has sunk to the bottom of a tank filled with water. The upward buoyancy force on an object immersed in a fluid is equal to the weight of the displaced fluid (Archimedes' principle). It follows then that depending on the density of a solid object relative to the density of a liquid (such as water) the object will either sink in or float on the surface.

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Keywords: archimedes, buoyancy, buoyant, demonstration, density, education, educational, float, floating, fluid, force, law, liquid, nylon, physics, principle, scientific, sink, sinking, tank, water, weight, wood, wooden

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