- #1
abercrombiems02
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Hey everyone, I need some help here. The question is to show that the wobble rate of a plate when thrown slightly off axis, is twice that of the spin rate. I don't even know how to start this problem. All I really know is that the inertia matrix can be written simply about body fixed axes. Thus the axial moment of intertia is twice that of both the transverse axes. I know that the angular momentum is most likely a constant of the motion because gravity will not produce a moment about the center of mass. Also, H = Iw, but I do not know how to write an expression for w. I know i want to use body fixed coordinates, but do not know how to express the precession (or wobble) rate in terms of these body fixed coordinates? Can someone please show me how to start this problem?