p=F/S
F=pS
F=mg
m=ρV
ρVg=pS
S=a²
ρVg=pa²
V=a³
ρ=pa²/a³g
ρ=p/ag
ρ=10 000/25*10⁻³*10=40 000 (кг/м³)
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p=F/S
F=pS
F=mg
m=ρV
ρVg=pS
S=a²
ρVg=pa²
V=a³
ρ=pa²/a³g
ρ=p/ag
ρ=10 000/25*10⁻³*10=40 000 (кг/м³)