Two spheres of same size are made from copper and iron respectively. Find the ratio between their masses. Density of copper 8,900 kg/m^3

Question

Two spheres of same size are made from copper and iron respectively. Find the ratio between their masses. Density of copper 8,900 kg/m and iron 7,800 kg/m³

Answer 1

Given : Density Copper Dc = 8900 kg/m³

Density of Iron D₁ = 7800 kg/m³ 

Volume of Copper sphere = Volume of Iron sphere

To find : Ratio of Masses of Copper (M_C) and Iron (M_I)

Solution: Mass = Density x Volume 

M_C = D_C x V, M₁ = D₁ x V 

M_C = 8900 V, M₁ = 7,800 V 

M_C = M₁ 

8900 V : 7800 V 

= 1.14: 1