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
Wiki User
β 12y agoWiki User
β 13y agopulleys were used at construction sites to lift heavy medal rods
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.
For internal pulleys located in the engine compartment which are used for the fan belts, the radiator has to be removed. If the radiator's not removed, it will be too cramped to work. Un bolting the pulley supports allow the pulleys to retract an 1/8 to 1/4 inch or so allowing the belts to come off, or cut them, then stretch the new ones on. Outside towing pulleys are simple bolt on jobs; ALWAYs attached to the chasis frame of course!
pulleys
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.
Movable pully
Pulling gears, pulleys and such.
block and tackle
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.
You need to know the capacity of the pulleys. The pulleys need a total power of over 1000 newtons, if they do then you should be fine.
Make sure you have a lot of used materials, such as cardboard, pulleys, levers, screws, wood, marbles, and anything else. Use the parts to make your machine.