Translations:AY Honors/Physics/Answer Key/49/en

The principle of the lever tells us that the above is in static equilibrium, with all forces balancing, if F₁D₁ = F₂D₂.

A fulcrum is the support on which a lever turns in moving a body.

By changing the distance between the load and the fulcrum, we can increase or decrease the mechanical advantage of the machine known as a lever.