Eg volkswagon has a timing belt and a pulley tensioner that make the car run if they go your car won't work. They are supposed to be replaces every 100000km and when you replace one you replace both of them along with the watercpump because the labour is expensive and you don't want to have to pay to do it again in a month
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
yes the do have pulleys
Many people use pulleys in their jobs. The rides like Supreme scream, which go vertically up and down have pulleys in them. Elevators have pulleys in them, and people who ship cargo use pulleys in their cranes.
Archimedes (not a group, a guy) invented pulleys as well as other simple machines.
The Giza Pyramids were constructed using step-walking wooden four-lobe pinion-pulleys with a mechanical advantage of 2.8 (MA=2.8) This ancient pulley was unknown to the modern world until 27 August 2006. The design and operation of this pulley is nothing like any pulley known in the modern world. Google four lobe pinion pulley.
pulleys
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
When two or more pulleys are used together it is called a compound pulley system.
pulleys are actually still used in elevators, cranes, and car lifts. however, they're used with motors.
The pulley was used by the Romans to move large pieces of equipment and to create buildings. Pulleys were also used in the creation of weapons.
The pulley formula used to calculate the mechanical advantage of a system involving pulleys is MA 2n, where MA is the mechanical advantage and n is the number of pulleys in the system.
Movable pully
block and tackle
Pulling gears, pulleys and such.
No, pulleys can be used to lift heavy or light objects. The mechanical advantage of pulleys allows for an easier lifting process regardless of the weight being lifted.
For that you'll want Google Images, and pulleys,please see link provided.
Pulleys can be used to either increase force or redirect the force. A single fixed pulley changes the direction of the force applied, while multiple pulleys in a system can be used to increase the force applied to lift an object.