Hunting a black hole. Observations of the light from a certain star indicate that it is part of a binary (two-star) system.This visible star has orbital speed v = 270 km/s, orbital period T = 1.70 days, and approximate mass m1 = 6Ms, where Ms is the Sun’s mass, 1.99 * 10^30 kg. Assume that the visible star and its companion star, which is dark and unseen, are both in circular orbits .What integer multiple of Ms gives the approximate massm2 of the dark star?

University Physics Volume 1
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Chapter13: Gravitation
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Problem 42P: Astronomical observatrions of our Milky Way galaxy indicate that it has a mass of about 8.01011...
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Hunting a black hole.
Observations of the light from a
certain star indicate that it is part of
a binary (two-star) system.This visible
star has orbital speed v = 270
km/s, orbital period T = 1.70 days,
and approximate mass m1 = 6Ms,
where Ms is the Sun’s mass, 1.99 *
10^30 kg. Assume that the visible star
and its companion star, which is
dark and unseen, are both in circular
orbits .What integer
multiple of Ms gives the approximate
massm2 of the dark star?

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