In inquiry we made a pulley. A pulley is a simple machine that makes lifting heaving objects that are too heavy for the normal human. The top of the creation is called the axle it is the part that lets the rope go through.Using more pulleys makes it a lot easier to pull it up. You need a stable base so all the work stays in place. We made ours out of plastic squares from school supplies. Taller the strucksher is needed for pulling heavy stuff like stone on to high stories in the city. A giant is in cranes and other big stuff. You need a lot of string or rope that is sturdy. The hole pulley needs to be able to move. We used straws and put tape so it would not move side to side. To make the heavy object we put blocks in a plastic cup.
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