Tackle pulleys' working principle

Working principle:

The working principle of Tackle Pulley is based on the mechanics of the pulley set. When the rope or chain goes around the pulley, one or more blocks can be formed, thereby changing the direction and magnitude of the force. Specifically, the use of pulleys can save effort, but will increase the distance of the rope or chain; The fixed pulley can change the direction of the force, but it will not save effort. Complex lifting and transmission tasks can be achieved through the combination of fixed and driven pulleys.