When a body is immersed partly or wholly in a fluid, in rest it is buoyed up with a force equal to the weight of the fluid displaced by the body. This principle is called Archimedes principle. Apparent weight of the body of density (ρ) when immersed in a liquid of density (σ).
Apparent weight = Actual weight – Upthrust
= W – Fup = Vρg – Vσg = V(ρ – σ)g
(1) Relative density of a body (R.D.)
(2) If the loss of weight of a body in water is ‘a’ while in liquid is ‘b’
