The gravitational potential energy (U) associated with two particles of masses 'm1' and 'm2' and separated by a distance 'r' is given by ________.
1
V = -G m1m2/r2 ('G' is gravitational constant)
2
V = -gm1m2/r ('g' is acceleration due to gravity)
3
V = -gm1m2/r2 ('g' is acceleration due to gravity)
4
V = -Gm1m2/r ('G' is gravitational constant)