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Una caja con masa de 50 kg es arrastrada a travs del piso por una cuerda que forma un ngulo de 30 con la horizontal.

  1. Una caja con masa de 50 kg es arrastrada a travs del piso por una cuerda que forma un ngulo de 30 con la horizontal. Cul es el valor del coeficiente de rozamiento cintico entre la caja y el piso si una fuerza de 250 N sobre la cuerda es requerida para mover la caja con velocidad constante.

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