A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 7.0×10−3 less than that at sea level.

What is the observatory's altitude?

2 answers

(1-7.0E-1)=(re/(re+alt))^2

That is the inverse square relationship.
My Prof. used the equation ---- (G*Me)/((Re+h)^2)=g'
He said to solve for h which is what I did but it didn't work. Suggestions?