Product Description
A pulley is a simple machine used to change the direction of force or save effort. Let me provide a detailed introduction to the different types and functions of pulleys:
Fixed pulley:
Function: The fixed pulley is used to change the direction of force, but cannot easily pull objects. When we need to change the direction of force application, we can use a fixed pulley.
Feature: The central axis of the fixed pulley is fixed and does not move. It is essentially an equal arm lever that can change the direction of force application to a direction that is easy to output. However, fixed pulleys are not effortless.
Moving pulley:
Function: The moving pulley can pull an object with half the force saved, but it cannot change the direction of the force. It is essentially a lever with a power arm equal to twice the resistance arm.
Features: The axis position of the moving pulley moves with the object being pulled. Although it cannot change the direction of force, it has a significant effect in saving effort.
Pulley block:
Function: A pulley block is a device composed of multiple fixed pulleys and moving pulleys. It can change the direction of force and effortlessly pull objects.
Feature: The pulley group cannot save power, because although it saves effort, it consumes distance. The energy-saving level of the pulley group depends on the number of strands of the rope. twelve
In short, pulleys are a very useful simple machinery that can be widely used in daily life.
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