The wooden model for casting has a weight of 2 kg. What is the mass of the cast iron part made with this model?

The wooden model for casting has a weight of 2 kg. What is the mass of the cast iron part made with this model? Density of cast iron 7000kg / m3, wood 400kg / m3?

Initial data: m1 (weight of the wooden model for casting) = 2 kg.

Reference data: according to the condition ρ2 (density of cast iron) = 7000 kg / m ^ 3; ρ1 (wood density) = 400 kg / m ^ 3.

1) Determine the volume that the casting will occupy: V = m1 / ρ1 = 2/400 = 0.005 m ^ 3.

2) Let’s calculate the mass of the future cast iron part: m2 = V * ρ2 = 0.005 * 7000 = 35 kg.

Answer: The mass of the cast iron part will be 35 kg.