A pair of stars rotates about their cent...

A pair of stars rotates about their centre of mass One of the stars has a mass `M` and the other has mass m such that `M =2m` The distance between the centres of the stars is d (d being large compared to the size of either star) .
The ratio of the angular momentum of the two stars about their common centre of mass `(L_(m)//L_(m))` is .

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