What do you mean by buoyancy ncert class 9?
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an upward force exerted by a fluid that opposes the weight of an immersed object.
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The upward force exercised by solutions such as liquid and gas on objects when they are absorbed in them is described as buoyant force and the event is known as buoyancy. Now to retain the object immersed we have to employ outside force from the upward orientation to overcome buoyant force.
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