A pulley is a simple machine. Pulleys make lifting easier. If you have one pulley on one rope, you are pulling that same exact weight. If you have two pulleys on one rope. with a hundred lbs. you are only pulling 50 lbs., but you have to pull twice as far. We learned about pulleys in school. We got to pull down with a pulley and watch the load move up. N.D.S.U. came over to our school and we got to build cars with Lego's. we got to pull a pulley with one ropes that one was way heavier then the one with six ropes. The one with six ropes was easier to pull but you had to pull it further.
Aren't pulleys fun to learn about?
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