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AP Physics B: Centripetal Force and Gravity

by stonecoldgen
Tags: centripetal, force, gravity, physics
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stonecoldgen
#1
Sep26-11, 08:41 PM
P: 103
1. The problem statement, all variables and given/known data
Two stars of mass m1 and m2 are in orbit around their center of mass. If 2m1=5m2, and thier orbital period is 120Ms, calculate the mass of the larger star, given that the distance between their centers is 1400Gm.


2. Relevant equations
F=GmM/r2


3. The attempt at a solution
I don't even know what to put as mass of the centripod, i kneed serious help
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ehild
#2
Sep27-11, 06:18 AM
HW Helper
Thanks
P: 10,634
What have you learnt about two-body problems? Reduced mass? Kepler's Laws?



ehild


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