[tex]dane:\\m_2 = 160 \ kg\\S_2 = 4 \ m^{2}\\S_1 = 1 \ m^{2}\\g = 10\frac{N}{kg}\\szukane:\\F_1 = ?\\\\Rozwiazanie\\\\F_2 = m_2\cdot g = 160 \ kg\cdot10\frac{N}{kg} = 1600 \ N\\\\Z \ prawa \ Pascala:\\\\\frac{F_1}{S_1} = \frac{F_2}{S_2}\\\\F_1 \cdot S_2 = F_2\cdot S_1 \ \ /:S_2\\\\F_1 = F_2\cdot\frac{S_1}{S_2}\\\\F_1 = 1600 \ N\cdot\frac{1 \ m^{2}}{4 \ m^{2}} = 1600 \ N\cdot\frac{1}{4} = 400 \ N[/tex]