in 1922 by a man called james pulley
a pulley that Archimedes made
a pulley is made of iron
to avoid slip
A fixed pulley and a movable pulley Block and tackle is made up of both
The pulley is an invention, and it takes a person to invent. So, yes, it is man made. If it wasn't man made, then that would mean it just fell outa the sky. -.-"
The pulley
a pulley
An example of a pulley sytem is a flag pole.
he made the pulley because he wanted to help people out so they dont have to carry all of the heavy stuff.
lolly pop invent yeah baby
yes
no