The 6 Simple Machines
by Whitney :)
In order to make things easier in our lives, we design machines to help us complete tasks with more ease. In this flyer, we will look at the 6 simple machines: lever, wheel and axle, inclined plane, pulley , screw, and wedge
A lever is one type of simple machine. Levers are rigid bars that is supported at one point. They also have 3 different types of levers; first-class, second-class, and third-class. An example of a first-class lever is a see-saw, in which the fulcrum (the object that holds up the plank) is in the middle. A second-class lever is when the fulcrum is located at the edge of the of the object. An example is a bottle opener. Lastly, third-class levers have the fulcrum located beside the input force, for example, a rake.
A pulley is probably one of the most known simple machine, since the mechanics are easy to know. A pulley consists of a wheel of some sort and a rope wrapped around it. Pulleys are what in one of the most useful thing that is found in the mall; an elevator. The elevator itself is pulled up by the pulleys and help you get to the other floors of the mall.
A screws' definition is pretty much exactly what it looks like; an inclined plane wrapped around a pole. The looks are very simple and at first you wouldn't think they're not capable of doing the things they do. But, really, they are a good tool to hold things together for a long time, better than tape or glue. The example for this simple machine is...screws!