Question

What is the principle of Archimedes? A metal block weighs 150 g in air.If its density is 3g/cc,what will be its weight in water?

Answer 1

● Archimedes' principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid.

F{b}= - ρ g V

F{b} = buoyant force

ρ = fluid density

g = acceleration due to gravity

V = fluid volume

● Density = (wt. in air) / ( wt. in water)

=> 3 = (150)/ ( wt. in water)

=> ( wt. in water) = 150 / 3 = 50 g