Recent content by justjoshus

  1. J

    What are the balls suspended by strings that keep swinging back and forth?

    What do you call and where can i buy the set of balls (maybe 4 or 5) suspended in strings and when the outermost ball hits the the next one and bounces off the last one on the other end and sets off perpetual motion? I surely appreciate any ones response. Thank you. Josh
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