- #1
HelloMotto
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Ok I remeber a question on my physics test. where there's a planet orbiting a star in some other solar system.
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 here's 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, I am 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?
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 here's 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, I am 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?