1. The problem statement, all variables and given/known data What is the physics behind a balanced wine bottle holder. Something like this....http://www.thetipsygrape.com/product-racks-bottle-holders-straight-wood-bottle-balance.html 2. Relevant equations No equations. 3. The attempt at a solution I didn't know where to ask this question but I'm guessing this has to do something with the center of gravity and the angle that the wood was cut.