Asked by Jessica

What is the gravitational potential energy of a two-particle system with masses 5.4 kg and 5.0 kg, if they are separated by 1.3 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you?

Please help me. i figured out how to get part a but part b and c i am confused on.
Answered by bobpursley
GPE= GM1*M2/distance
Answered by Becky
when i plugged in the values i got 4.62E10 is that number suppose to be negative or positive?