http://img444.imageshack.us/img444/8148/rollwx.jpg [Broken] A rope is wound around a cylinder of mass 4kg, and I=0.02kg.m2 about the cylinder axis. The frictional force between table and cylinder is negligible. Solution: a=20/4=5.0m/s2 α=ar is not applicable when slippage occurs. My question. 1.Is the cylinder moves forward with acceleration a without any rotation. 2. Is Fr=Iα is still applicable in this case, even though we know α=ar not applicable. 3. If we play yo-yo in zero gravity environment,how does the yo-yo behave when we pull it? Thank you.