Material used in real life of pulley
The pulley can be divided into "fixed pulley" and "moving pulley" according to whether the central axis of the pulley moves or not; The central shaft of the fixed pulley is fixed, and the central shaft of the movable pulley can be moved. Each has its own advantages and disadvantages. The fixed pulley and the movable pulley can be assembled together to form a pulley block. The pulley block can not only save labor, but also change the direction of force.
Pulley appears in the form of knowledge points in junior middle school physics textbooks, which requires answers to the direction of force, moving distance of rope end, work done and other questions.
Fixed pulley, movable pulley and pulley block (or divided into single pulley, double pulley, three pulley, four pulley and even multiple pulley).
texture of material
Wooden pulley, steel pulley and engineering plastic pulley can be made of various materials according to the actual use requirements.
effect
Pull the load, change the force application direction, transmit power, etc.
Connection method
Hook type, chain link type, wheel material type, lifting ring type, lifting chain type, cable-stayed type, etc
