What is a pulley
what is a pulley
A very simple machine. http://www.google.com/imgres?imgurl=http://www.southeastclimbing.com/images/pulley1.gif&imgrefurl=http://www.southeastclimbing.com/faq/faq_pulley.htm&h=263&w=153&sz=2&tbnid=kRTjpk4aDcEwaM:&tbnh=91&tbnw=53&zoom=1&usg=__tlgXffe1BmqsuG3mqlnlSJpCZbE=&docid=H4NUxV-4RHpRhM&sa=X&ei=ChjRUKDnLqasigKAuIDABg&ved=0CDcQ9QEwAQ
something that pulls something else.
a pulley is a fixed wheel and axle that has a rope going on it. it is used to lessen work.