Asked by Olushola
                A block and tackle system with six pulley system on which an effort of 50N is just able to lift a load of weight W.if the efficiency of the machine is 40%,find the value of W.
            
            
        Answers
                    Answered by
             henry2,  
            
    e = W/E = 0.4.
W/50 = 0.4,
W =
    
W/50 = 0.4,
W =
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