The thing you pull or push to flush the toilet. LOL
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a coumpound pulley is when there is a fixe pulley and movable pulley working together
Pulley machine type of many! Machine have many pulley, many pulley machine! Type machine, many pulley type. Pulleys, type pulley machine many type. Machine.
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The simple pulley was invented in ancient times by an unknown person. The compound pulley was invented by Archimedes.
the pulley was invented in the 1956