1.

Lever of length 2.5m has a load of 20 qfis tance of to cn from one end and fult another the ind of shorter arm and thea applied at the end of longer arm.sindi()Lo)TheTheLof effort arm.mechanccal advantage.​

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کچھ سمجھ نہیں آیا۔۔۔۔۔۔



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