Asked by Anonymous

If a force of 380 N is applied to the end of a 2 meter crowbar order to lift a 500N rock and if the fulcrum of the bar is 0.5 meters from the rock. What is the efficiency of the lever?
Answered by Leo Galleguillos
To start, what is the formula for efficiency?
Answered by Anonymous
I have a sheet with all formulas we used
Mechanical Advantage = Output Force/Input Force
Speed Ratio = Input Distance/Output Distance
Work = Force x Distance
Efficiency = Mechanical Advantage/Speed Ratio x 100
or
Efficiency = Work Output/ Work Input x 100
Answered by Anonymous
the question also uses 2 formulas