[tex]Dane:\\p = 1012 \ hPa = 101 \ 200 \ Pa = 101 \ 200 \ \frac{N}{m^{2}}\\S = 0,72 \ m^{2}}\\Szukane:\\F_{n} = ?\\\\\\p = \frac{F_{n}}{S} \ \ /\cdot S\\\\F_{n} = p\cdot S\\\\F_{n} = 1012000 \ \frac{N}{m^{2}}\cdot0,72 \ m^{2}\\\\\boxed{F_{n} = 72 \ 864 \ N}[/tex]
