1. The problem statement, all variables and given/known data A uniform cylinder of mass M and radius R has a string wrapped around it. The string is held fixed, and the cylinder falls vertically. (a) Show that the acceleration of the cylinder is downward with a magnitude a=2g/3. (b) Find the tension in the string. 2. Relevant equations I=1/2MR2 3. The attempt at a solution Not sure how to start, does it involve the conservation of mechanical energy?