What Is an Example of a Block & Tackle Pulley System?
A block-and-tackle hoist or pulley system uses pulleys in groups called blocks. “Tackle” refers to the line that travels through the pulleys. The combination of several pulleys into one block may seem redundant at first, but it provides significant leverage, or mechanical advantage, much as a lever and fulcrum reduces the force needed to move a load. Block-and-tackle systems are common in nautical use, which was, historically, probably its first use.
