a person of weight 50 kg weight in air displaces 40 kg water when he swims keeping his body in the water the weight he loses is
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Answer:
Weight in air = 50 Kg
Upthrust = Volume x density x acceleration due to gravity
= 40 x 1 x g {Volume = mass/density ;density of water = gm/cm^3}
= 40 gf
Thus, Weight of water displaced = Weight of body in water = Upthrust on body = 40 Kg
Therefore weight of person lost when in water = 50 - 40 = 10 Kg
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