in a class three lever the distance between the effort and the load is 40 cm and load arm is 1 m long.Find the length of the effort arm and then calculate MA

Dear Student ,
Here load arm length = 1 m = 100 cm , so the effort arm length = 100 - 40 = 60 cm .
So the mechanical advantage = effort arm length / load arm length = 60 /40 =  3 /2 =1.5 
Regards

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