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Una polea cilindrica maciza (ICM = M.R2/2) como la de la figura tiene masa M y radio R = 0.5 m. Las masas ml y

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Una polea cilindrica maciza (ICM = M.R2/2) como la de la figura tiene masa M y radio R = 0.5 m. Las masas ml y m2 son de 4 kg y 8 kg respectivamente. M El sistema esta inicialmente en reposo y en t = 0 se lo deja libre iniciandose el movimiento hacia la derecha con aceleracion constante e igual a 2 m/s2. Calcular: a) Las tensiones en las cuerdas. (Rta: 48N, 64 N) b) La masa de la polea. (Rta: 16 Kg) ma c) La energia cinetica despues de 3 segundos. Rta: 360 J

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