Rolling Upward!? – Impossible Double Cone

by AT Prints · Physics & Astronomy

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This is a classic physics demonstration: a double cone that appears to roll upward on diverging rails. Although it looks like it is moving against gravity, the center of mass is actually moving downward, making this a fascinating and counter-intuitive experiment. It’s a great educational model for explaining center of mass, gravity, and geometry. Features Designed for FDM 3D printing Simple and robust geometry Perfect for education, classrooms, and science demonstrations Eye-catching “impossible motion” effect