Unlike gears, pulleys have no teeth to cause movement.
Belts play an important role in machines.
Rather than connect motors and engines to devices directly, they are connected using belts. Should the force exerted be too great, the belt breaks, reducing the chances of causing damage to the machine. Turn the axle of the small pulley. Record your observations on the axle attached to the large wheel in the space below. Remove the belt from the pulley and twist it into a number eight shape.