The lever below pivots on a fulcrum. An effort of 2 lbs is applied on one side of the fulcrum to lift a load of 8 lbs on the other side of the fulcrum. What is the mechanical advantage of the lever?

4

Explanation

\(\text { Mechanical advantage }=\frac{\text { Outputforce }}{\text { Inputforce }}=\frac{\text { Load }}{\text { Effort }}=8 \mathrm{lbs} / 2 \mathrm{lbs}=4\)

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