What a chaos! You cannot command this pendulum!
How to use?
Spin the pendulum a few times, then leave it swinging! If you restart the pendulum once more, you can observe a totally different movement; you are practically unable to induce two similar motions.
The T shaped pendulum, along with its fix and the three freely moving arms together creates a “determined chaotic” system. This means that if we manage to define exactly the staring conditions then we would be able to calculate its movement, however, this is such a complicated system that a slight difference causes huge divergence in the forming movement.