[tex]dane:\\a = 10 \ cm = 0,1 \ m\\V = a^{3} = 0,1 \ m\times0,1 \ m\times 0,1 \ m = 0,001 \ m^{3}\\d = 1000\frac{kg}{m^{3}}\\g = 10\frac{N}{kg}\\szukane:\\F_{w}=?\\\\F_{w} = d\times g\times V\\\\F_{w} = 1000\frac{kg}{m^{3}}\times 10\frac{N}{kg}\times 0,001 \ m^{3}\\\\F_{w} = 10 \ N[/tex]
