Odpowiedzi

2010-02-24T17:11:34+01:00
Dane:
d = 25 cm
p = 1,5 [kN/cm²]
Rozw.:
s = πr² = π × (d/2)² = 3,14 × (25 cm/2)² = 491 cm²
p=F/s
F = p × s = 1500 [N/cm²] × 491 cm² = 736500 N = 736,5 kN

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