Simple Machines and Mechanical Advantage Research Paper

Simple machines are used to make people perform specific tasks without using much power. They increase the effect of input distance, speed or force. They can also help turn the direction. Simple machines include levers, pulleys, ramps, wedges, screws, wheels and axles, and gears. 1 Some of these simple machines produce composite machines. Some examples of multifunction machines are carts consisting of wheels, axles and levers, and cork screws with two levers and screws.

A simple machine is a mechanical device that changes the direction and size of force. In many cases, they can be defined as the simplest mechanism for increasing the force using mechanical advantages (also called levers). Usually this term refers to the six classical simple machines defined by Renaissance scientists. Simple machines use a single force to counter a single force. Ignoring the friction loss, the work done on the load is the same as the work done by the applied force. The machine can increase the amount of output power at the expense of a proportional decrease in the load traveling distance. The ratio of the output to the applied force is called the mechanical advantage.

A simple machine idea was born from Greek philosopher Archimedes, lever, pulley of the 3 rd century BC who studied Archimedes' simple machine. He discovered the principle of mechanical advantage in leverage. A famous comment on Archimedes' leverage is "Limited to the amount of force amplification that can be achieved by using a mechanical advantage" (Greek: δῶςμοιπᾶστῶκαὶτὰνγᾶνκινάσω) gives me a place to stand, I will move the earth I express his understanding that there is nothing. . Later Greek philosophers could define the classic five simple machines (except for the slope) and calculated roughly their mechanical advantage. For example, Alexander's Heron (10-75 AD) lists five mechanisms for setting "exercise load" in his book "Mechanics": lever, anchor, pulley, wedge and screw. Manufacture and use of them