1. The problem statement, all variables and given/known data A Christmas tree ball hangs from a hook in the ceiling. If the radius of the ball is 8 cm, find the period of the ball's oscillation as it swings on the hook. 2. Relevant equations T=2pi*√L/g 3. The attempt at a solution I tried pluggin the number and i'm way off the answer. Am i using the right equation?