What do you understand by buoyancy? explain why cork floats while the iron nail sink when placed on the surface of water ?
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the tendency of an object to float in a liquid or the power of the liquid to make an object to float in it is called buoyancy .
The weight of iron is greater than the upthrust of water on the iron nail, so iron nail sinks in water. On the other hand , the upthrust on cork is more than the weight of the cork . Hence wooden cork floats on water .
hope this will help... :-)
The weight of iron is greater than the upthrust of water on the iron nail, so iron nail sinks in water. On the other hand , the upthrust on cork is more than the weight of the cork . Hence wooden cork floats on water .
hope this will help... :-)
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