The effort distance will be 160 cm.Applying the moment at the center as follows will provide the effort distance:
Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtain the efficiency of forces in levers and pulleys.
Given data;
Effort,[tex]\rm F_e=00 N[/tex]
Load,[tex]\rm P= 400 \ N[/tex]
Distance from the fulcrum,[tex]\rm d=40 \ cm[/tex]
The effort distance is found by applying the moment at the center as;
[tex]\rm F_e \times d= P \times d' \\\\ 200 \ N \times d'=800 \ N \times 40 \ cm \\\\ d'=160 \ cm[/tex]
Hence, the effort distance will be 160 cm
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