(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

How high above the surface of the Earth must a mass be located so its gravitational potential energy is only 17.00% of its value on the surface?

2. Relevant equations

PEg=(-GMm)/r, PElocal= mgy where y is height the object can fall

3. The attempt at a solution

I've tried a couple of different things but all my variables cancel out.

(-GMm)/r1=0.17((-GMm)/r2

r1/0.17=r2 If I randomly set r1 to be 1 r2= 5.88235 but that doesn't make sense because if you raise an object by 5m it would have a greater PEg

Any suggestions on where to go?

Thanks!!

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# Homework Help: Gravitational Potential Energy of the earth

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