[tex]Dane:\\m_1 = m_2 = m = 100 \ 000 \ t = 100 \ 000 \ 000 \ kg = 10^{8} \ kg\\r = 100 \ m = 10^{2} \ m\\G = 6,67\cdot10^{-11}\frac{Nm^{2}}{kg^{2}} \ - \ stala \ grawitacji\\Szukane:\\F_{g}=?\\\\\\F_{g} = G\cdot\frac{m_1\cdot m_2}{r^{2}}\\\\F_{g} = 6,67\cdot10^{-11}\frac{Nm^{2}}{kg^{2}}\cdot\frac{10^{8} \ kg\cdot10^{8} \ kg}{(10^{2} \ m)^{2}}}=6,67\cdot10^{-11}\frac{Nm^{2}}{kg^{2}}\cdot\frac{10^{16} \ kg^{2}}{10^{4} \ m^{2}}\\\\F_{g} = 6,67\cdot10 \ N\\\\\boxed{F_{g} = 66,7 \ N}[/tex]
