👉 In physics and mathematics, a "corotating system" is an ensemble of particles that are in constant motion around a common center of mass. The center of mass of a system is the point where all the particles have the same distance from it. This means that any particle at rest or moving with uniform velocity will be subject to the same force, regardless of its position relative to the other particles. In physics and engineering, a "corotating system" is often used in conjunction with other