Why objects float or sink when placed on the surface of water?Explain all the factors.
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342
an object floats because of buoyant force it is a force in upward direction which make object float and due to gravitational force an object sink in water . it is also due to density if density is greater then water it will sink and if more then it will float
shruti50:
sorry i was wrong at that point when density is less then it will float ex oil
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164
An object will float on the surface of water when it has density less than that of water because it always displaces more weight of water than its own weight, and as the buoyant force is more than its own weight, therefore it floats. On the other hand, an object sinks in water when it has density more than that of water because it always displaces less weight of water than its own weight, and as the buoyant force is less than its own weight, it sinks in water.
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