A light rope passes over a light frictionless pulley attached to the ceiling. A

Question

A light rope passes over a light frictionless pulley attached to the ceiling. A large mass is tied to one end and a smaller mass is tied to the other. Starting from rest the larger mass moves downward and the smaller moves upward with the same magnitude acceleration. Which of the following statements is true for the system consisting of the two masses? (A).The center of mass remains at rest. (B).The velocity of the center of mass is a constant. (C).None of these statements are true. (D). The net external force is zero. (E)The acceleration of the center of mass is g, downward.

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