1. The problem statement, all variables and given/known data A weird conundrum I came across while doing some basic mechanics, I just can't figure out. Okay, so a mass is hanging vertically from a spring and the spring is stretched a distance x. 2. Relevant equations 1/2kx2=mgh...(h=x) therefore...1/2kx2=mgx mg=kx 3. The attempt at a solution solve the top equation for m and you get m=(kx)/(2g) solve the bottom equation for m and you get m=(kx)/g why are they different, what am I missing or not doing correctly?