I think if this was sharp and had some more light (especially on the wires and bottom of the balls) it would be great. I like the composition and movement. You had a good idea, but I don't think it was executed as well as it could have been.
Better lighting would have actually communicated round. As it is, it depends on me knowing what this is, and/or the title. I do like the blurred effect of the ball in motion. Might have been a better shot (as it is) for speed.