Lively Pulley: The “enter” pulley in a dual-pulley technique. The shaft of this pulley is pushed by something like a motor, a crank, or probably yet another pulley in larger systems. This pulley controls the motion of the belt.
Energetic Pulley: The “enter” pulley in a twin-pulley system. The shaft of this pulley is pushed by something like a motor, a crank, or maybe one more pulley in more substantial techniques. This pulley controls the motion of the belt.