Oct 012012

For a shorter, better version here: www.youtube.com The cancellation can be simple and fun toy. Give it a push and it rolls quickly to you! Learn how to build your own in minutes household items readily available. check media.blogspot.com How it works: The weight pulls down on the rubber band. As the box rollers, the rubber strip is bent and stores energy. The more he runs, the more energy is stored, all the while slowing down the box. When it stops, the stored energy in the rubber strip is transferred to the box. And that is why it rolls back. You can also try shaking the bottle in a circular motion so that the rubber band is twisted, and then let it roll. If your design is good enough, it might even roll up the hill! Comment, rate, share and enjoy! PS: Sorry for the robot voice that sounds. : P
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