Homework Help: physics

Posted by kristen on Sunday, March 16, 2008 at 11:44pm.

In a certain binary star system, each star has the same mass as our sun, and they revolve about their center of mass. The distance between them is teh same as the distance between the EArth and sun. Wha tis their period of revolution in years?

physics - bobpursley, Monday, March 17, 2008 at 9:26am
You know the force of gravity, you know the radius of rotation.

GMsMs/r^2=Ms v^2/r

but v=2PI r/Period
solve for period.

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