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A body of mass 50 kg has a volume of 0.049 m3 . The buoyant force on it is? |
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Answer» Since the net upward force must be equal to the net downward force. So, buoyant force = mg=50x9.8=49kgf Can you see the answer again. Is it 49kg f? Sorry sis but in the book it is given the option with the answer 49N is right but there is no solution here Mass of body = 50kgvolume = 0.049 m^3Since the density of body is more than density of water, it will sink.When it sinks, it will displace equal volume of water.So volume of water displaced = 0.049 m^3mass of water = density × volume = 1000×0.049 = 49kgbuoyancy = weight of water displaced=> buoyancy= mg=> buoyancy= 49×10 = 490NHence, buoyant force is 490N The buoyant force is 490 N. |
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