Question

In basic physics lectures, the teacher or professor in my class never explains the behavior of rotating two or many body particles. In my experience and intuition doing physics, two-particle or many-body systems tend to rotate about their center of mass. For example, the earth-sun rotates around its center of mass, or two black holes rotate around its center of mass; also in ideal conditions, without air friction, a stick when a force is applied to it at the end edge, stick will rotate around its center of mass. Can anyone explain the physics of a system of mass that tends to rotate around its center of mass? I tried to solve this problem and read some reference books, but I don't have any conclusion. most of the books I read just explain what rotation or torque is.Or, is my intuition wrong?

Answer 1

In physics, rotational motion and the principle of conservation of angular momentum explain the behavior of a system of mass that tends to rotate around its center of mass.

Step-by-step explanation:

In physics, the behavior of a system of mass that tends to rotate around its center of mass can be explained using the concept of rotational motion and the principle of conservation of angular momentum. The center of mass is a point within the system where the system's mass can be considered to be concentrated. When external torques acting on the system are zero, the angular momentum of the system remains constant. A system of two or many body particles tends to rotate about its center of mass due to the conservation of angular momentum.