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Kylewo 8 Pcs Sticky Ball Toys, Color Sticky Ball, Fluorescent Sticky Wall Ball, Sticky Balls for The Plafond, Wall Balls Decompression pour Adultes Enfants : Amazon.fr: Jeux et Jouets
Consider three identical smooth balls placed between two vertical walls as shown in figure. Mass of each ball is m and radius r =5 R /9, where 2 R is separation between
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