When a body, totally or partially, is immersed in liquid at rest, it appears lighter, this apparent loss of weight is equal to the weight of liquid displaced by the immersed part of the body.
Apparent weight = actual weight - Upthrust
= mg(1 - p/d)
where, d = density of body
p = density of liquid
Weight of plastic bag full of air is same as that of empty bag, as the upthrust is equal to the air filled in the bag.
Apparent weight = actual weight - Upthrust
= mg(1 - p/d)
where, d = density of body
p = density of liquid
Weight of plastic bag full of air is same as that of empty bag, as the upthrust is equal to the air filled in the bag.
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