when your a mechanic
Simple machines are very useful in doing work as they speed up and increase production.
It makes work easier, because its less work, the more pulleys, the easier
Pulleys are really useful at times because of all the things they can help you with. For example, window blinds. Have you ever even thought about the way the blinds in your window work? They work with pulleys! The small pulley in your window folds the blinds and pulls them up. There are pulleys in elevators, cranes, lifts, wells, dumbwaiters, even tape rolls.
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Pulleys have a rope that goes over the top of the pulley that is when pulled used to raise what ever you want raised.
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by helping each other
Tree trimming uses combination pulleys. Also combination pulleys are used to lift engines out of cars to work on them. Some construction sites use them in places they cannot get a crane.
It is called a compound machine.
stage hands and people who work behind he scenes.
Because it made work easier, especially lifting.