# Potential energy in gravitation

The gravitational potential energy of a two particle system is:

$$U = -G \, \frac{m_1 \, m_2}{r}$$

where $r$ is the distance between the two particles with mass $m_1$ and $m_2$, and the potential energy at infinite separation is taken to be zero.

My question is the following:

Is this the sum of the potential energies possessed by each particle? If that is the case, then what would be the contribution of each particle to the total potential energy?

• have a look here hyperphysics.phy-astr.gsu.edu/hbase/gpot.html – anna v Dec 18 '15 at 12:23
• Potential energy between two masses is..... We know, but concept of energy depend on system so we cannot define your problem until you define what is your system. – user102574 Dec 31 '15 at 6:23