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ρ = 791 [kg/m³]
g = 10[m/s²]
a = 5 cm = 0,05 m
Rozw.:
V = a³ = 0,000125 m³
Fw = ρ × g × V = 791 [kg/m³] × 10[m/s²] × 0,000125 m³ = 0,988 N