characteristics 08 Gravitational forceIt is always abbectiveif is independent 08 the intervening mediumIb is independent 08 presence or absence 08 otherparticlesit is a central force.I6 is a conservatic gooce.Ib obeys low 08 superposition principleIt is a weakest force9I6 25 a long range force.4F = Gm,m2DL0' = 20F'Gmma = / Gmima - F(20024re 4