553. In una leva di primo genere nella condizione di equilibrio, la resistenza è 5/6 della potenza aumentata di 2 kg. Sapendo che il braccio della potenza e il braccio della resistenza misurano rispettivamente 8 m e 9 m, calcola il valore della potenza e della resistenza. [36 kg; 32 kg] b. P F . b.

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