Physics, 03.07.2021 14:00 jinxjungkook3

In uplifting 750 newton load with the help of 2 meter long lever lever took 250 newton efforts . What will be the efficiency of a machine if the fulcrum is kept 50 cm from the load

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In uplifting 750 newton load with the help of 2 meter long lever lever took 250 newton efforts . Wha...