posted by Casey .
A binary star system consists of two equal mass stars that revolve in circular orbits about their center of mass. The period of the motion, T=29.6 days, and the orbital speed v= 220 km/s of the stars can be measured from telescopic observations. What is the mass (kg) of each star?
Each has a force holding it to the other.
this is equal to centripetal acceleration.
check my thinking. solve for M
Using Newton's law and the law of universal graviation:
Acceleration is centripital acceleration, so a=(v^2)/r