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Tout a coup, tu te souviens de la 2 me loi de Newton (E F = m a) et tu imagines une nouvelle experience. Selon

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Tout a coup, tu te souviens de la 2 me loi de Newton (E F = m a) et tu imagines une nouvelle experience. Selon la 2 eme loi de Newton l'acceleration d'un chariot est directement proportionnelle a la force exercee sur le chariot. Or on a vu au debut du labo que la force gravitationnelle augmente proportionnellement a la masse (F, = m g). Ainsi, si on suspend differentes masses a un chariot (comme montre sur le schema ci-dessous), la force subie par le chariot - et donc son acceleration - augmentera avec la masse suspendue. Toutefois, la masse suspendue devrait toujours avoir la meme acceleration car il s'agit d'une chute libre, n'est-ce pas ? Comment reconcilier ces 2 attentes ? F F Tu decides de realiser des experiences pour tenter de resoudre ce paradoxe. Decris ces experiences, fournis les resultats et propose une resolution du paradoxe

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