Hello If we have a system of several particles bound between them, we often separate the movement of CM from the degrees of freedom of the bound system. Is the degree of freedom of the CM linked to other degrees of freedom of the bound system? Equivalent questions: can we unbound (untie, unfasten, set free) the particles by giving* energy to the CM?, or vice versa, can we bound "stronger" by draining energy from the degrees of freedom to CM]? *I don't know what verb is used instead of give; maybe "convey" would be a more specific word. My mother language is not English, please forgive any mistake. Thank you for your time :) Greetings.