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a)they both work using the principle of boency.
b)the weight of any substance decreases when it is in water.that is why bucket can be easily lifted when it is in water.
b)the weight of any substance decreases when it is in water.that is why bucket can be easily lifted when it is in water.
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lactometer And hydrometer are based on Archimedes' principle.
In water buoyancy force exerted on bucket in upward direction so its easily lifted .
In water buoyancy force exerted on bucket in upward direction so its easily lifted .
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