Note: Do the pendulum experiment first, and when you’re done with the heavy nut from that activity, just use it in this experiment.
You can easily create one of these mystery toys out of an old baking powder can, a heavy rock, two paper clips, and a rubber band (at least 3″ x 1/4″). It will keep small kids and cats busy for hours.
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I am sorry for the access issues – we’re still trying to fix them, it’s totally our fault. I am rechecking the site now, let me know if still doesn’t give you access?
This experiment was on the DVD we received by mail. I watched it last night but am away from the DVD right now. I wanted to have Michelle watch it now, but it says no access.
Oh no! Feel free to send me images/video to [email protected] – take an image of the inside your can and also how it rolls. What happens if you try different weights and different tensions on the rubber band?
We couldn’t get it to work! We tried a couple different ways. It just rolled around wobbly.
Yes, I am sure you can get it to work – give it a try!
What if you use a toilet paper roll and a rock?
Perhaps, or that it’s not winding itself up because they are too tight. Take a look at how it winds when you hold it in your hands and gently rotate it to simulate the rolling motion.
Ours is not coming back to us if we give it more than a very gentle push. Is it because the rubber bands are too stretched out inside the can?