Un sistema de poleas se utiliza para levantar una caja de cartón de 225 N de peso. Para mover la caja una distancia de 1.65 m se requiere aplicar una fuerza de 149 N al extremo libre de la cuerda en el sistema de poleas y moverlo una distancia de 2.75 m. a) ¿Cuál es la ventaja mecánica real? b) ¿Cuál es la eficiencia del sistema de poleas?
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Un sistema de poleas se utiliza para levantar una caja de cartón de 225 N de peso. Para mover la caj...
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