So, that is the question: Under what conditions does L=Iw hold? Where L,I,w are all scalars. Some specifics perhaps: 1) Supose a fixed axis of rotation, with accel, does is hold? 2) Suppose de axis of rot is not a ppal axis 3) Suppose there is fixed axis of rot, but I choose neither x nor y nor z to be in that direction, I'll have to use the I tensor, right? Anyway this are just suggestions. Thanks a lot.