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Utilitzem el polispast de la figura per aixecar un pes de 100 N. Determina el tr...

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Utilitzem el polispast de la figura per aixecar un pes de 100 N. Determina el treball, W, de la força pes damunt el cos i la longitud de corda, d , que cal estirar per aixecar el cos 4,0 m, a velocitat constant. Preneu g = 10 m/s2.

4.05

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