Simple machines make work easier. They are every where in our daily life. Machines such as pulleys, inclined planes, and levers are all used to move a load. By using a lever, you can do the same amount of work with less force. There are three different kinds of levers: first-class, second-class, and third-class. You probably are not even aware of the different levers that can be found around your house. An example of a third-class lever would be a broom. The fixed point of a lever is called the fulcrum. From the fulcrum to the end of the lever, where the force is applied, is the effort arm. The length of the lever between the fulcrum and the load is the resistance arm. A brooms effort is applied between the fulcrum and the resistance. So, as you sweep the brooms bristles across the floor you are applying a downward force to the middle of the broomstick. The end of the broom is the fulcrum, where you are holding with one hand. This pushes the bristles down on the floor. As you move the broom form side to side you move the load (the load is what ever you are trying to sweep up). The b......

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