I'm hoping that at least one of you have read/worked with this book and noticed that there are blatant errors in the solutions he gives to his problems. How am I supposed to check and see if I'm going about it correctly if I cannot verify my answer in the end? It's my only "text book" for the class and I'm on a break, trying to get ready for a test on Tuesday. I'm in an odd situation because there seems to be numerous errors/irrevelant procedures in these chapters and now I'm not sure what to trust. My test is going to cover many topics dealing with Rotational Dynamics: 1) Relating Linear and Rotational Variables (piece of cake) 2) Rotational Kinetic Energy (Got it down for itself, but why do I now have to combine it with linear KE for problems such as dealing with a mass hanging from an atwood machine? Why didn't I take this into account before?) 3) Moment of Inertia Calculations (I'm somewhat versed in using them if they are given to me, but can I figure for a non-given/continuous object without calculus?) 4) Parallel-Axis Theorem (I'm very hazy with this, as in "why?") 5) Torque (I've got all of the equations down, but I have questions about the perpendicular lever arm) 6) Rolling (easy enough with KE) 7) Angular Momentum (I only have to deal with Conservation (no external torque?)) 8) Rotational Equilibrium (I'm fine with straight things such as sticks on scales with weights, but other than that I'm gone. i.e. angles (ladders, planes), maximum overhangs, etc.) I don't have to know about rotational work and power, the perpendicular-axis theorem, and precession. So, my question is: Is there any place that has addressed this problem and has posted corrections? Have any of you who have worked with the book noticed this? If no, or if it doesn't help me, is it OK if I post a plethora of questions not exactly looking for numerical answers but rather the reasoning behind all of this? Thanks, Drew This might need to be moved to introductory physics, sorry.