tres particulas possuem as seguintes massas e cordenadas: 5,0 kg, x=y=1 cm; 3,0 kg, x=4 cm, y=1cm; 2,0 kg, x=y=2,0 cm.
tres particulas possuem as seguintes massas e cordenadas: 5,0 kg, x=y=1 cm; 3,0 kg, x=4 cm, y=1cm; 2,0 kg, x=y=2,0 cm. encontre a posicao do centro de massa deste sistema de particulas.
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