mechanical advantage

force multiplying levers allow us to move a heavy load with a small effort

 

the mechanical advantage of a force multiplying lever is defined as

 

mechanical advantage = load / effort

 

quiz

what is the mechanical advantage of a lever
a. if one unit of effort is used to lift a load of 3 units
b. if 3 units of effort is used to lift a load of 6 units
c. if 5 units of effort is needed to lift a load of 5 units
what does the mechanical advantage tell us in each of these situations?

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