- #1
axxon
- 15
- 0
Homework Statement
The gravitational field strength of an unknown planet is 15.5 N/kg on its surface. Calculate the value of “g” if the planets mass and radius were both doubled. Hint: Use variation.
Homework Equations
g= GM /R2
The Attempt at a Solution
Well my teacher gave a hint saying use variation so this was my attempt at it:
M / 2M = R2 / 2R2
Now this is where i kind of get stuck. If I simplify M, i am left with:
1/2 = R2 / 2R2
I don't now what i should do next or if i am even on the right track...
Thanks in advanced!