V = 250л; S = 500см²
p-?
p = F/S; F = mg; m = ρV; ρ(бетона) ≈ 2300кг/м³
p = ρVg/S;
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V = 250л; S = 500см²
p-?
p = F/S; F = mg; m = ρV; ρ(бетона) ≈ 2300кг/м³
p = ρVg/S;
p = 2300кг/м³ * 0,25м³ * 10Н/кг / 0,05м² = 115кПа