[tex]Dane:\\p = 3 \ kPa =3 \ 000 \ Pa = 3 \ 000 \ \frac{N}{m^{2}}\\m = 100 \ kg\\g = 10\frac{N}{kg}\\Szukane:\\S = ?\\\\Rozwiazanie\\\\Korzystamy \ ze \ wzoru \ na \ cisnienie:\\\\p = \frac{F}{S} \ \ \rightarrow \ \ S = \frac{F}{p}\\\\ale: \ \ F = m\cdot g = 100 \ kg\cdot10\frac{N}{kg} = 1000 \ N\\\\S = \frac{1000 \ N}{3000\frac{N}{m^{2}}}\\\\\boxed{S_{min} = 0,33 \ m^{2}}}[/tex]
