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I can understand the mathematics of this phenomena

- First, one can solve the Euler equations of motion numerically, using Runge-Kutta and plot the motion.
- Also, the path of the angular velocity vector will like on the kinetic energy ellipsoid and the angular momentum vector.
- Finally, while angular momentum in the inertial frame is conserved, it does not mean that that components must be constant.

I can

*ACCEPT*(operative word here) all of this and understand the corresponding mathematics (polhodes, etc.)

However, I cannot INTUIT why this effect SHOULD happen: I cannot ANTICIPATE it.

In many cases of physcs, say the Coriolis Effect, I can reason my way through it and justify it.

But could someone explain in WORDS, why this Tennis Racket behavior is expected when an object rotates about the axis that correspeonds to the intermediate moment of inertia?

Or are there some behaviors in he physical world that cannot be SIMPLY explained?