Pulley has different physics. Pulley is used to lift heavy objects.
I used a pulley to lift the large log.
A fixed pulley system helped men in the early 1800s construct stone bridges.
My heart felt as if being lifted up on strings by a pulley.
An another word for a pulley is a sheave or a drum,
the word pulley device that for easy movement of objects
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The origin of the word pulley is Middle English: from Old French polie, probably from a medieval Greek diminutive of polos 'pivot, axis.'
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Pulleys is the plural form; the singular is pulley.
yes, it is a simple machine
yes look it up on dictionary.com
a sentence with the word variety