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Buoyancy |
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Introduction |
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| In our common experience we know that wooden objects float on water, but a small needle of iron sinks into water. This means that a fluid exerts an upward force on a body which is immersed fully or partially in it. The upward force that tends to lift the body is called the buoyant force, The buoyant force acting on floating and submerged objects can be estimated by employing hydrostatic principle. |
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Fig L 10.1 : Buoyant force |
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With reference to figure(L- 10.1), consider a fluid element of area |
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. The net upward force acting on the fluid element is 
L-10.1