Section 14.3 Mechanical Advantage And Efficiency Answer Key Pdf Guide

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Efficiency = (3.5 / 4) * 100% = 87.5%

First find AMA from efficiency: ( 0.75 = \fracAMA12 \Rightarrow AMA = 9 ) Then ( AMA = \fracF_\textoutF_\textin \Rightarrow 9 = \frac14,000 , \textNF_\textin ) ( F_\textin = \frac14,0009 \approx \mathbf1,556 , N ) (about 350 lbs) To help me provide the exact information or

Efficiency=(Work OutputWork Input)×100%Efficiency equals open paren the fraction with numerator Work Output and denominator Work Input end-fraction close paren cross 100 % \textNF_\textin ) ( F_\textin = \frac14

Efficiency measures how much of the work input is actually converted into useful work output. Due to friction, efficiency is less than 100%. Formula: 0009 \approx \mathbf1