Rotation around a fixed axis

Sphere rotating around one of its diameters

An example of rotation. Each part of the worm drive—both the worm and the worm gear—is rotating on its own axis.

Rotation around a fixed axis is a special case of rotational motion. The fixed axis hypothesis excludes the possibility of an axis changing its orientation, and cannot describe such phenomena as wobbling or precession. According to Euler's rotation theorem, simultaneous rotation along a number of stationary axes at the same time is impossible. If two rotations are forced at the same time, a new axis of rotation will appear.

单词	Axes of rotation
释义	Axes of rotation 英语百科 Rotation around a fixed axis Rotation around a fixed axis is a special case of rotational motion. The fixed axis hypothesis excludes the possibility of an axis changing its orientation, and cannot describe such phenomena as wobbling or precession. According to Euler's rotation theorem, simultaneous rotation along a number of stationary axes at the same time is impossible. If two rotations are forced at the same time, a new axis of rotation will appear.
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Axes of rotation

Rotation around a fixed axis