Magic Rollback Can – Sick Science! #051
Learn more at http://www.stevespanglerscience.com/experiment/magic-rollback-can-sick-science In our long line of “magical” science, we introduce the Magic Rollback Can. The Magic Rollback Can appears to be a normal can of coffee or oats, but after you roll it along the ground a little ways and watch it come back, you’ll be wondering just how it works.
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The correct answer has been given here, but I would like to say this would make an excellent baby toy!
How is this using elastic potential energy ?