# Question about Center of Mass

Please see the attached file for full problem description with diagram.

For the system of particles described above, find the x coordinate xcm of the center of mass. Assume that the particle of mass M is at the origin and the positive x axis is directed to the right.

Express your answer in terms of L.

#### Solution Summary

Solution starts with defining the center of mass in terms of position vectors ri of mass mi, and mass mi.