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Brooke143
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Homework Statement
Our sun rotates about the cneter of the galaxy (m = 4*10^41kg) at a distance of about 3*10^4 light years ( 1ly=(3*10^8m/s)*(3.16*10^7 s/y) what is the period of our orbital motion about the center of the galaxy?
Homework Equations
Okay so I believe you would use g(m1)(Ms)/(r1^2)= m1(4pie^2r1/t1^2) but i don't understand
what do i put in for ms and m1 and r1 i assume r1 is the (3*10^4) and m1 is the (m = 4*10^41kg) but then what is Ms any help would be great thanks