[tex]dane:\\F_{c} = 3000 \ N\\F_{T} = 500 \ N\\a = 2,5\frac{m}{s^{2}}\\szukane:\\m = ?\\\\F_{w} = m\cdot a \ \ /:a\\\\m = \frac{F_{w}}{a}\\\\F_{w} = \frac{F_{c}-F_{T}}{a}\\\\m = \frac{3000 \ N - 500 \ N}{2,5\frac{m}{s^{2}}}\\\\m = \frac{2500 \ N}{2,5\frac{m}{s^{2}}} = \frac{2500 \ kg\cdot\frac{m}{s^{2}}}{2,5\frac{m}{s^{2}}} = 1000 \ kg[/tex]
