- Ages 8+
- Size: 70 x 70 x 60 mm

WARNING: Take care when handling to avoid tangling the string.

Swing one ball back, let it go, and watch the energy transfer through to the ball on the opposite end as it swings to almost the same height. But the fun doesn’t stop there; the balls continue to swing until energy loss due to air resistance and transfer to sound slows the momentum, allowing you to observe the principles of conservative motion right in front of you.

What happens if you swing two or even three balls?