OK, my largest issue with dealing with uniform cylindrical pulleys and a single block (object) is understanding where mass of the block relates in any of the equations. Specifically, I was doing some problems earlier with no issues at all. Then I came across one asking about the mass of the block hanging from the pulley. The book and my notes do not speak of this. Known: mass of the pulley radius, Tension, This seems like a pretty straight-forward topic, yet I cannot seem to locate much on it. Can anyone please explain the topic? Thank you in advance, I have already found much help from these forums, and without them would probably not pass calculus based physics!