Which of the following affects the speed of a wheel turning in relation to gear sizes?

The speed of a wheel turning in relation to gear sizes is influenced significantly by the number of teeth on each gear. When gears interact, the relative sizes, indicated by the number of teeth they have, determine how quickly they turn in relation to one another.

For instance, if one gear has more teeth than another, it will turn more slowly compared to the smaller gear because it has to cover a greater distance for each rotation. This relationship is fundamental in gearing systems, where larger gears with more teeth rotate slower but produce greater torque, while smaller gears with fewer teeth rotate faster but with less torque. Thus, understanding the number of teeth on gears is crucial for predicting the speed and torque output of gear systems.