Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Assertion: If there are no external forces, the center of mass of a double star moves like a free particle.
Reason: If we go to the center of mass frame, then find that the two stars are moving in a circle about the center of mass, which is at rest.
Text Solution
Verified by ExpertsThe correct answer is:
B
In our frame of reference, the trajectories of the stars are a combination of
(i) Uniform motion in a straight line of the center of mass and
(ii) circular orbits of the stars about the center of mass.
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