1.

ooden block floats in glycerine in such a way that its th volume remains above surfaceIf rclative density of wood is 0.78, calculate the relative density of glycerine.

Answer»

Volume of block = VVolume of water displaced = V - 2V/5 = 3V/5 = 0.6VDensity of wood (d) = 0.78 × 1 g/cm³ = 0.78 g/cm³Density of glycerine = d’

Weight of block = Buoyant ForceVdg = 0.6Vd’gd’ = d / 0.6d’ = 0.78 g/cm³ / 0.6d’ = 1.3 g/cm³

Relative density of glycerine = 1.3 g/cm³ / (1 g/cm³)= 1.3

Relative density of glycerine is 1.3

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