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MCQAdvancedGravitation, Orbits & Dynamics

USAAAO — 2016 First Round

Question 6

Estimate the mass of an old globular cluster if the escape velocity at the edge of the cluster is 8.5 km/s. The cluster is made up of red stars that are all around ½ of the mass of the sun. The cluster has a radius of 100 pc. Answers are given in solar masses.

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Source

Source: USAAAO 2016 First Round, Question 6.