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adok
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Homework Statement
I already searched for solution and i found similar one but I'm still confused.
-In which point between Earth and Moon gravity field equals 0 if distance between moon and Earth is 60.3 * radius Earth and mass of the Earth is 81 * mass of the moon.
Homework Equations
ɣ*M/(d-x)2 =ɣ*m/x2
The Attempt at a Solution
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O----------------------o
M...(d-x)...|...x...m
consider this a sketch, (d-x) is distance between Earth and that point, x is distance between moon and that point. M is mass of the earth, m is mass of the moon.M/(d-x)2=m/x2
81/(d-x)2=1/x2
81x2=(d-x)2 /root
9x=d-x
10x=d
10x=60.3Re (Radius of the earth)
x=6.03Re
not sure if i made mistake or my book author where he says it has 2 solutions and isn't near as simple as my answer.