A back-and-forth or reciprocating movement is known as an oscillation. An example would be the motion of a pendulum. Closely related words include flux, undulation, pulsation, cycle, vibration, alternation, and see-saw(ing).
Allow a back and forth movement of the rotor
Vibrations
Pace.
The definition of the word oscillation is "movement back and forth at a regular speed."
When the movement is only in one direction, doesn't go back and forth.
The word is oscillation.
Reciprocating.
loner star
back in forth movement is the anwser
if you mean where they rub sideways against eachother then that is called the transform movement.
The back and forth movement is most commonly attributed to oscillations.
they vibrate back and forth.
A
longitudinal vibration
A vibration.
Another way to say "back and forth" is "to and fro."
To and fro is another phrase that means back and forth. Back and forth can also refer to a quick dialogue between two people, and another word for that kind of back and forth is repartee.