Odpowiedzi

2010-04-03T19:55:17+02:00
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