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*g*= GM/r

^{2}, however if I'm trying to show the proportionality relationship between just

*g*and

*m,*would

*g ∝ m*be correct, since a larger mass equals a stronger force of gravity and vice versa?

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BvU

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What about the dependence of ##r## on m (c.q. vice versa) ? Think two planets of the same composition ...

PS do use consistent notation: don't change capital M for lower case m if it is not the intention to designate another variable

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Yup, that's where I got confused haha. The mass of the object needs to be divided by the square of it's radius. The question I'm stuck on asks for me to write a proportionality relationship for^{2},

What about the dependence of ##r## on m (c.q. vice versa) ? Think two planets of the same composition ...

PS do use consistent notation: don't change capital M for lower case m if it is not the intention to designate another variable

(Taking a class online is so frustrating when you don't quite understand something, I feel like I'm teaching myself!)

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Of course then Einstein came along.

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With ##m\propto r^3## and ##g \propto m/r^2## I would say: 8 times heavier, then twice the gravitational acceleration... but I agree that an online answer is a gamble

isn't so bad at all !I feel like I'm teaching myself)

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It's about determining the orbital period of an asteroid (in earth years) that has the average radius of orbit as 2.77 AU. It says to use the value of Kepler's constant "expressed in the units of yr

C=T

C=1

And then to calculate the orbital period:

T=√Cr

T=√(1yr

I feel like this doesn't look right...I'm pretty sure I didn't input the correct value for C but I'm unsure how to otherwise get it..

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