Center Mass

Calculate position of center mass.

A coordinate system for determining center of mass:

The position of center mass can calculated as

Rx = (ma·xa + mb·xb) / (ma + mb)

or equivalently:

Rx = (mb / (ma + mb)) · d

Where:

• Rx = x-coordinate for the center of mass
• ma = mass of object a
• xa = x-coordinate of object a
• mb = mass of object b
• xb = x-coordinate of object b
• d = distance between objects