Definition of belt driving principle
The belt drive is driven by friction, and when the active wheel is rotating, the active wheel is doing positive work on the friction of the belt, increasing the speed of the belt
At the pair of pulley, the belt of vice pulley friction does positive work, making vice wheel rotation, also depend on the frictional force on the belt objects in motion, and the principle of belt drive is similar,
The so-called belt principle is actually a simple object that produces friction between the belt
