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Circular Motion Problems ANSWERS

Circular Motion Problems ANSWERS

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Dec 11, 2012 · The visible mass in that galaxy is 1.8x1041 kg. What fraction of the galaxy’s mass is dark matter? F=ma N2L F gravity =mv 2/r Gravity provides the centripetal acceleration GM galaxy m star /r 2=m star v 2/r Star is the mass moving in a circle M galaxy =v 2r/G = 8.6x1041 kg Solving for mass of the galaxy* ( Initially I goofed up my

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