- #1

- 74

- 0

heres what was given to me.

the radius,and the time it took for it to finish 1 revolution. I was asked to find the mass of the sun, that the planet was orbiting around

so heres what i did.

I calculated the distance, which was 2 pi r.

I divided that value by time and got the speed.

then i used Fc=FG formula.

mv^2/r = Gm1m2/r^2

with some cancellations, im left with

v^2=Gm(star)/r

so i just isolated for m and solved it. I remember i got like some number x 10^30kg.

but did i do this question right? was this the right method of solving it?