No one in my class seems to get this: A 4.8-kg uniform cylinder rolls without slipping down a plane at 26.3-degree angle above horizontal. (a) What is the translational acceleration of the cylinder? (b) What is the magnitude of the frictional force? Now I know that the without slipping part is a crucial part of the problem that dictates what forumula should be used. I don't know what formula to use exactly though, because none of them seem to fit.