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Swinging Atwood's machine — The Swinging Atwood s machine (SAM) is a mechanism that resembles a simple Atwood s machine except that one of the masses is allowed to swing in a two dimensional plane.The Hamiltonian for SAM is::H(r, heta) = T + V = frac{1}{2} M {dot r}^2 +… … Wikipedia
Involvement of the People's Republic of China in Africa — This article is primarily about economic relations between the PRC and Africa. For a more general overview, see Sino African relations. The People s Republic of China and Africa Chinese involvement in Africa, which began centuries ago, continues… … Wikipedia
Kämmerérite — Catégorie IX : silicates[1] Kämmerérite Kop Krom mine Turquie … Wikipédia en Français
Pendule d'Atwood — Le Pendule d Atwood Mouvement du pendule d Atwood pour M / m = 4,5 Le Pendule d Atwood est un mécanisme … Wikipédia en Français

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