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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 broom has been around for centuries and it has proven to be very useful, even though newer machines have come out. The purpose of this simple machine is to be able to move a very small load, such as dirt, into a certain area to be collected.
This can save a lot of time and force versus having to pick it up by hand. Different kinds of simple machines are used to make work easier. A simple machine cannot produce more work than you put into it, but increases the force. All simple machines work in different ways. A lever turns on a fixed point.
A pulley is a lever in the form of a wheel. No matter how a simple machine might work they all have one thing in common: they make our life significantly east. Stairs are an inclined plane, and just imagine what it would be to live without stairs.
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Research essay sample on Make Work Easier Simple Machines Lever
