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So I have this homework questions which asks me to watch this video on youtube:

http://www.youtube.com/watch?v=MHW8ZwxOiKY" then the question asks to estimate Peter's mass.

I have determined that I can find the angular velocity of the object orbiting Peter by determining the period of the orbit.

w=2(pi)/T

Now I thought about equating the centripetal force and gravitational force together, then using the angular speed found, I could find the mass. However, there is a left over constant, the radius. I am not sure if there is anyway to eliminate it.

Any help would be appreciated!

Thanks

DoubleMint

http://www.youtube.com/watch?v=MHW8ZwxOiKY" then the question asks to estimate Peter's mass.

I have determined that I can find the angular velocity of the object orbiting Peter by determining the period of the orbit.

w=2(pi)/T

Now I thought about equating the centripetal force and gravitational force together, then using the angular speed found, I could find the mass. However, there is a left over constant, the radius. I am not sure if there is anyway to eliminate it.

Any help would be appreciated!

Thanks

DoubleMint

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