A roly-poly toy,tilting doll,tumbler,or wobbly man,is hollow inside with a weight placed at the bottom. The toy's center of mass is below the geometrical center of the bottom sphere. Thus the toy has a minimum potential energy and is at stable equilibrium when it is in the upright position. Many cultures and countries have their own version of a roly-poly toy. Shown here is a traditional Russian Nevalyashka (Nevaliashka) toy | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Giphotostock |
Bildgröße: | 4500 px × 2987 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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