For inquiry we were learning about simple machine. Simple machine are able to help humans in way that they, themseves may not be able to. A pully is a type of simpole machine, it helps by lifting heavly objects with less amount of force being used. A pully has a hook,the rope, the wheel, the groove and the load. When using a pully, someone needed to be on one end and the other end will be hooked to the heavy load.
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