1. The problem statement, all variables and given/known data An 7.60-cm-diameter, 400 sphere is released from rest at the top of a 1.90-m-long, 16.0 incline. It rolls, without slipping, to the bottom. What is the sphere's angular velocity at the bottom of the incline? What fraction of its kinetic energy is rotational? 2. Relevant equations Can't really come up with any. 3. The attempt at a solution I don't even know who to approach the problem. Any help? or at least any hints??