#1
Yeah im doing an assignment.

i need to prove that the mass of the sun is what it is, using the centripetal acceleration of the earth(already got it) amongst other things but its the carry on from another question.

helpos?
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#2
i think its called keplers law...
Its like a formula:

Rcubed=((gravity constant*Mass) / (4piSquared)) * Tsquared
Last edited by UrMomsMom at Nov 8, 2007,
#4
yeahhh, ive got keplers law. but that doesnt involve centripetal acceleration.
Oh dear god, I dont feel alive.
I have a new blog, of the interesting type.

In so far i have seen,

1. The Darkness
2. Wolfmother
3. The Grates
4. Faker
5. Kings of Leon
6. Coheed and Cambria
7. Architecture in Helsinki

and counting.
#5
yeh it does... its a derivation from two formulas.. which includes the centripetal acceleration
#6
oh noes. my physics teacher just kind of wrote that one up there without doing any differentiation.
Oh dear god, I dont feel alive.
I have a new blog, of the interesting type.

In so far i have seen,

1. The Darkness
2. Wolfmother
3. The Grates
4. Faker
5. Kings of Leon
6. Coheed and Cambria
7. Architecture in Helsinki

and counting.
#7
Use Newtons 2nd Law first
((G * M * m)/(r^2)) = m * a

assuming the velocity is constant, then the only acceleration on earth is centripetal.

You gotta find the velocity by using the centripetal foruma:
((G * M * m)/(r^2)) = m(V^2/r)

if you have both masses, you should be able to find the radius of the sun.

simple algebra
#8
ohhh smooth!
Oh dear god, I dont feel alive.
I have a new blog, of the interesting type.

In so far i have seen,

1. The Darkness
2. Wolfmother
3. The Grates
4. Faker
5. Kings of Leon
6. Coheed and Cambria
7. Architecture in Helsinki

and counting.
#9
Quote by jimmmypage#1
ohhh smooth!


+1
well played, sir.
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