- #1
physics817
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Homework Statement
The moon has a mass M = 7.36e+022 kg and an average radius R = 1740 km.
for part a)I solved for the gravitational acceleration on the surface of the moon= 1.62 m/s^2
An object on Earth weighs 64 N.
b) What is the weight of this same object on the moon? Answer: 10.568 N
I am stuck on part c. of the problem...
c) How many Earth radii must this same object be from the surface of the Earth if it is to weigh the same as it does on the surface of the moon?
Homework Equations
g= GMe/Re^2
The Attempt at a Solution
What I did was, I tried to use the g(moon)= 1.62= GMe/(nRe)^2
where G= 6.67e-11
Me= 5.97e24
Re=6.37e6
And solved for n= number of Earth radii= 2.461, but that isn't correct.
Can someone tell me what I did wrong? Thank you.