Physics
A body of volume V and density ρ is kept completely immersed in a liquid of density ρL . If g is the acceleration due to gravity, write expressions for the following —
(i) The weight of the body,
(ii) The upthrust on the body,
(iii) The apparent weight of the body in liquid,
(iv) The loss in weight of the body.
Fluids Upthrust
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Answer
Given,
volume = V
density = ρ
density of liquid = ρL
acceleration due to gravity = g
(i) The weight of the body, acting downwards = V ρ g
(ii) The upthrust on the body, acting upwards = V ρL g
(iii) The apparent weight of the body in liquid = V(ρ - ρL)g
(iv) The loss in weight of the body = V ρL g
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