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The figure above represents a block-and-tackle pulley system on which an effort of W ...


The figure above represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the efficiency of the machine is 40\(^o\), then the value of W is

A. 28.0N
B. 48.0N
C. 288.0N
D. 50.0N




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