Ch44-p042 - 42(a The mass of the portion of the galaxy within the radius r from its center is given 3 by M = r R M Thus from GM m r 2 = mv 2

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42. (a) The mass of the portion of the galaxy within the radius r from its center is given by ′ = Mr R M b g 3 . Thus, from GM m r mv r = 22 (where m is the mass of the star) we
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This note was uploaded on 05/19/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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