Antisynchronous mode

Figure 5-2 Synchronous and Antisynchronous Modes of Motion in a Bound, Two-Mass Harmonic Oscillator.

Two degrees of freedom lead to two modes of motion. These two modes of motion, synchronous and antisynchronous, are the normal modes of motion for this system. If only synchronous motion is excited, the antisynchronous mode will never contribute to the motion. The same is true for the pure antisynchronous mode (Fig. 5-2b) there will never be a synchronous conPibution. Under these conditions, but only under these conditions, energy does not pass from one mass to the other. 

If the masses are displaced in an arbiPary way or arbiPary initial velocities are given to them, the motion is asynchronous, a complex mixture of synchronous and antisynchronous motion. But the point here is that even this complex motion can be broken down into two normal modes. In this example, the synchronous mode of motion has a lower frequency than the antisynchronous mode. This is generally Pue in systems with many modes of motion, the mode of motion with the highest symmePy has the lowest frequency. 

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See also in sourсe #XX -- [ ]

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