1. The problem statement, all variables and given/known data A rod [pq] has lenght 4l and mass M. q is attatched to the circumfrence of a disc of mass M and radius l, in such a way that that p and q are colinear with the disc and the two pieces don't overlap. PART A Find the moment of intertia of the system about an axis through p perpendicular to the plain of the disc. PART B If the system is released from rest when q is vertically above p, find its angular speed and the speed at the centre of the disc when q is vertically below p. 2. Relevant equations I don't actually know what I'm supposed to put here? I'm sure everything you guys need to help me is included in the scans though. 3. The attempt at a solution I did the whole thing and got an answer. However, the answer is different that the one given at the back of the book. Did I make a mistake somewhere? I think all of Part A is correct. I must have done something wrong with Part B. I didn't want to type it all out again so I scanned my work. Is this okay? Sorry if my writing is hard to read.