(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Weight in Terms of Distance From Earth

1. The problem statement, all variables and given/known data

At what height above the earth's surface will an astronaut have a true weight that is one half his weight on earth?

2. Relevant equations

F=G(m1*m2)/r^2

(GM)/(4*pi^2)=(R^3)/t^2

3. The attempt at a solution

I did:

F/2=(G*m1*m2)/r^2

r=sqrt((2*G*m1*m2)/F)

My teacher got sqrt(2) times the radius of the earth. Where do I go from there?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Weight in Terms of Distance From Earth

**Physics Forums | Science Articles, Homework Help, Discussion**