Movable pully
When two or more pulleys are used together it is called a compound pulley system.
Block and Tackle
blck and tackle
When two pulleys are used together in a system, they create a mechanical advantage by distributing the load over multiple ropes and pulleys. This reduces the amount of force needed to lift an object, making the task easier.
When two pulleys work together, it is called a pulley system or a block and tackle system. This arrangement allows for mechanical advantage by distributing the load between the two pulleys, making it easier to lift heavy objects.
assuming that your question is what jobs are pulleys used for... then the answer is any job that you need to lift something that is heavy. The pulley give a mechanical advantage when used together with other pulleys to apply more force to move the object
They used ropes and other materials in Egypt to put it together.
several pulleys working together is known as a pulley system.
Most lifts have one or two pulleys which help in moving the elevator cab up and down the elevator shaft. The number of pulleys can vary depending on the design and type of elevator system being used.
Two kinds of pulleys are the fixed pulley and the movable pulley
The three kinds of pulleys are fixed pulleys, movable pulleys, and compound pulleys. Fixed pulleys are anchored in place and change the direction of the force applied. Movable pulleys have a pulley that moves with the load, reducing the force needed to lift the object. Compound pulleys consist of multiple pulleys working together to provide mechanical advantage in lifting heavy loads.
pulleys