Section 14.3 Mechanical Advantage And Efficiency Answer Key Pdf Extra Quality Jun 2026

A worker does 500 J of input work on a pulley system. The pulley system does 400 J of output work lifting a box. What is the efficiency?

Since work = force × distance: [ \textEfficiency = \fracAMAIMA \times 100% ] A worker does 500 J of input work on a pulley system