 
 | Sometimes, mechanisms are used to translate a small amount of movement into a larger amount (or vice versa). For example, in a high gear on a bicycle, one revolution of the pedal crank causes several revolutions of the bicycle wheel. Conversely, a car jack requires a lot of movement of the handle to lift the car just a short distance. This property is known as the velocity ratio, and is calculated by dividing the movement of the effort by the movement of the load.
|