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# pulley

«pulley» in Mova's school dictionary: **a simple machine made of a wheel with a groove that a…** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

noun (a pulley, pulleys)

### meaning for a pupil

A pulley is a simple machine made of a wheel with a groove that a rope or chain runs over, used to lift heavy things more easily. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#m1)

### sense in the lessons

In science lessons a pulley is one of the simple machines: pulling down on the rope lifts a load up; using more pulleys means you need less effort but must pull more rope. Flagpoles, cranes and wells use pulleys. Phrases: «a pulley system», «block and tackle», «simple machines».

### examples

- We used a pulley to lift the bucket. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x1)
- The flag goes up the pole with a pulley. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x2)
- A crane uses pulleys to lift heavy loads. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x3)
- With two pulleys, you need less effort. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x4)
- The old well had a pulley and rope. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x5)
- We built a pulley in our science lesson. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x6)
- The curtains open with a small pulley. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x7)
- Off went Tom and four men besides, and when they came to the tree they began to draw it into the cart with pulleys. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/#x8)

### note

Countable; plural pulleys (not pullies). Simple machines: lever, pulley, wheel and axle, inclined plane, wedge, screw. Maths of pulleys: with more ropes holding the load, the effort is smaller but the distance you pull is longer.

### In the corpora

- [With several pulleys, more lengths of rope share the load, so you pull with less force but must pull much more rope.](https://md.mova.elamur.ai/free/en/corpora/school/physics/35-pulleys-gears-and-big-machines/6/)
- [The lever, the wheel and axle, the pulley and the ramp are simple machines.](https://md.mova.elamur.ai/free/en/corpora/school/world/52-simple-machines/1/)
- [A pulley is a wheel with a rope over it.](https://md.mova.elamur.ai/free/en/corpora/school/world/52-simple-machines/8/)
- [A single fixed pulley changes the direction of the pull but not its size.](https://md.mova.elamur.ai/free/en/corpora/school/world/52-simple-machines/17/)
- [Several pulleys together let you lift a heavy load with a smaller force but a longer pull of rope.](https://md.mova.elamur.ai/free/en/corpora/school/world/52-simple-machines/18/)

### Trees and pragmatics

[Every meaning and example of «pulley» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/P/pulley/), each sentence with its dependency tree and frames.