I can imagine a pencil rotating about an axis parallel to its length and perpendicular to its length at the same time and I have also seen several self balancing mechanisms online (got no idea wt that is) where a ball spins in multiple directions
So what do they mean by an object can only have one axis of rotation?
In: Physics
If an object is rotating one way, and you try to rotate it another, the two just add together to create the final direction.
It’s like how an object can’t move in two directions at once. Any two directions add up to a new single direction. North and west just becomes northwest.
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