Tuesday, September 14, 2010
Fun with pulleys!
First day of our Six Simple Machines class, and we all got to play around a whole lot with pulleys... and discovered that they are extremely interesting and cool. We had lots of pulley action going up and down from the fort. Everyone got their own bucket, pulley, rope, and carabiner. We also had a cool clothesline pulley to explore, which was used to send some secret notes back and forth... and then for the grand finale we used pulleys to lift a real actual child. One pulley... we needed several hands pulling on the rope to help get the kid in the air. Two pulleys reduces the effort by half, so, much easier. With this three pulley system in the video, Henry can pull his weight up all by himself!