The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region

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The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as
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Sep
The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as a small star is in a circular orbit of radius R. Then the [...]
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