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Physics, 24.05.2021 17:30 0055babs

El niño del problema anterior .Digno hijo de su padre. También sostiene la barra con el padre y la madre suspendidos en ella; la segunda colgando de una polea enlazada al extremo de la barra, como se indica; y el padre (80 kg), suspendido directamente, a 25 cm del mismo extremo. ¿Qué esfuerzo tiene que efectuar el niño y por dónde tiene que sostener la barra?

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