[tex]Dane:\\M_{Z} = 6\cdot10^{24} \ kg\\M_{M}=2\cdot10^{22} \ kg\\R = 2\cdot10^{10} \ m\\G = 7\cdot10^{-11}\frac{Nm^{2}}{kg^{2}}\\Szukane:\\F = ?\\\\Rozwiazanie\\\\F = G\cdot\frac{M_{Z}\cdot M_{M}}{R^{2}}\\\\F = 7\cdot10^{-11}\frac{Nm{2}}{kg^{2}}\cdot\frac{6\cdot10^{24} \ kg\cdot2\cdot10^{22} \ kg}{(2\cdot10^{10} \ m)^{2}}\\\\F = 7\cdot10^{-11}\frac{Nm^{2}}{kg^{2}}\cdot\frac{12\cdot10^{46} \ kg^{2}}{4\cdot10^{20} \ m^{2}}}\\\\\boxed{F = 21\cdot10^{15} \ N = 21 \ PN \ (petaniutonow)}[/tex]
[tex](1 \ PN = 10^{15} \ N)[/tex]
