A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius...
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A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius R (R << L). A star outside the galaxy is orbiting the galaxy in a plane perpendicular to the galaxy and passing through its centre. If the time period of star is Tand its distance from the galaxy's axis is r, then: (A) Txr (B) Tx Vr (C) Tx r2 (D) T2 x p3 A very long (length L) cylindrical galaxy is made of uniformly distributed mass and has radius R (R << L). A star outside the galaxy is orbiting the galaxy in a plane perpendicular to the galaxy and passing through its centre. If the time period of star is Tand its distance from the galaxy's axis is r, then: (A) Txr (B) Tx Vr (C) Tx r2 (D) T2 x p3
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