I don't think anybody knows who originally made it, but Christiaan Huygens developed most of the math to explain it.
no
it is that a person does not ave to lift as much weight
a coumpound pulley is when there is a fixe pulley and movable pulley working together
a coumpound pulley is when there is a fixe pulley and movable pulley working together
Fixed and blank pulleys
the pulley was invented in the 1956
When two or more pulleys are used together it is called a compound pulley system.
Fixed Pulley and Compound Pulley.
obama
block and tackle
The simple pulley was invented in ancient times by an unknown person. The compound pulley was invented by Archimedes.
The bicycle is not a simple machine, there are too many interacting moving parts.