1. The problem statement, all variables and given/known data The question I'm working on says "A special, frictionless, thin meter stick is initially standing vertically on the floor. If the meter stick falls over, with what angular velocity will it hit the floor?" 2. Relevant equations v_rot=rw, I=1/12mL^2, KE=1/2Iw^2 3. The attempt at a solution I know that the stick is going to be spinning about its center of mass, assumably in the center of the stick. I also know that the cm will be falling straight down. When I set mgh=1/2Iw^2 I get stuck trying to solve for w without being given the mass of the stick.