Consider packaging mayonnaise. Using the information on the 225ml / 215g packs

Consider packaging mayonnaise. Using the information on the 225ml / 215g packs, determine the buoyancy of a 4.45g copper ball, accidentally placed in this mayonnaise.

Data: V1 (mayonnaise package volume) = 225 ml (225 cm3; 225 * 10-6 m3); m1 (weight of mayonnaise in a package) = 215 g (0.215 kg); m2 (mass of a copper ball) = 4.45 g (4.45 * 10-3 kg).

Reference data: g (acceleration due to gravity) = 9.81 m / s2; ρm (copper density) = 8900 kg / m3.

The buoyancy force that acts on a copper ball in mayonnaise is determined by the formula: Fa = ρ * g * V = (m1 / V1) * g * (m2 / ρm).

Calculation: Fa = (0.215 / (225 * 10-6)) * 9.81 * (4.45 * 10-3 / 8900) = 0.004687 N ≈ 4.7 mN.