Simple machines can change the magnitude or direction of a force. Specifically, simple machines are devices that use mechanical leverage to multiply force. By maximizing the output force that is created by the leverage, certain tasks perform more efficiently and more easily. The ratio between the input and the output force is known as the mechanical advantage, and it is this advantage that determines the effectiveness of a simple machine.

There are six known simple machines. They are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. They are the elementary building blocks that are combined to form more complicated machines. For example, the mechanism of a bicycle includes a pulley, levers, and wheels.

Simple machines can be divided into two categories: those that rely on torques equilibrium and those that rely on the vector resolution force. The machines in the first category are the wheel, lever, and pulley while the wedge, screw, and inclined plane lie in the second group.

Nearly every modern machine depends on a combination of many simple machines to function. Nevertheless, modern industrial machines are very sophisticated and expensive, and many companies utilize equipment leasing in order to finance them. An equipment lease provides a firm with a cost effective method to acquire the machines it needs to perform certain tasks, and it is much easier for the company to afford than purchasing equipment out of working capital. People tend to overlook simple machines, but they actually play a very important role in the technological as well as economic advancement of society.

About The Author

About the Author

Written by Chris Fletcher (aka the Lease Guy). Chris is a senior account executive at Crest Capital, where he manages vendor finance programs for manufacturers and dealers of equipment, vehicles, and software. He's also an active Twitterer—check out his page if you follow financial topics and current events in the world of finance.