During physics lessons, Iken was looking for fun Youtube videos to explain simple machines to her kids when she ran across Be the Hamster, a Rube Goldberg machine constructed by hobbyist tinkerer Joe Donoughe. The human-powered apparatus produced snow cones and frozen beverages, and it was mesmerizing, Iken recalls.
Participants spun handles, worked conveyor belts, and used levers and pulley systems to move and fill a cup of ice before climbing into a seven-foot tall wheel and…
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