1. The problem statement, all variables and given/known data The bent plate has a mass of 70kg per square meter of surface area and revolves about the z-axis at the rate w=30rad/sec. Determine the angular momentum H of the plate about the z-axis. (Neglect the mass of the hub and the thickness of the plate) http://img839.imageshack.us/img839/9853/angularmomentum.jpg [Broken] 2. Relevant equations w=w k HG=-Izzwzi-Izywzj+Izwzk 3. The attempt at a solution Splitting the bodies into various parts and calculating. However, as it is about the axis, and not the point, confused.