Question: A stellar black hole may form when a massive star dies. The mass of the star collapses down to a single point. Imagine an astronaut

A stellar black hole may form when a massive star dies. The mass of the star collapses down to a single point. Imagine an astronaut orbiting a black hole having six times the mass of the Sun. Assume the orbit is circular.

(

)

Find the speed of the astronaut if his orbital radius is

= 1

.

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