Simple Machines Series: The Lever

Many of the tools wee use everyday are levers. Nutcrackers, crowbars, forks are all examples of levers. All these tools have three important parts: fulcrum, effort, and resistance. Since these three parts are all found in all possible arrangements, these are three kinds of levers. Each of these types f levers help us in some way, but no machine works by itself. Levers help us exchange force for distance to give us an advantage in doing a particular task.