November 29, 2021

A machine is a tool that contains one or more components that use energy to do a good job. In other words, any physical system with a regular structure and operational properties is called a machine. Machines are powered by kinetic, chemical, mechanical, nuclear, thermal, and electrical energy sources, and allocate the energy received to perform a predetermined process to achieve a specific goal. The range of machines is very wide, from a turn to an airplane. A machine is a set of components and mechanisms that transfer energy. A machine (or mechanical device) is a mechanical structure that uses power to exert forces and control movement to perform a intended action. Machines can be driven by animals and humans, by natural forces such as wind and water and chemical, thermal or electrical energy, and include a system of mechanisms that shape the input of the actuator to achieve the specific application of the output and motion forces. They can also include computers and sensors that monitor performance and programmatic motion, often called mechanical systems. Renaissance natural philosophers identified six simple devices that were primitive devices that move loads and calculated the ratio of output force to input force, which is now known as a mechanical advantage. Modern machines are complex systems made up of structural elements. Mechanisms and control components are built in and have interfaces for easy use. Examples include a wide range of vehicles such as cars, boats and airplanes, home appliances and workplaces, including computers, air conveying and water handling systems, as well as farm machinery, plant tools and machinery, and robot automation systems.

Simple machine and complex machine

Machines are divided into two main groups: simple machines and complex machines. Sloping surfaces, wheels and axles, levers, pulleys, wedges and bolts fall into the category of simple machines, and other machines are all complex. Complex machines are created by putting together a set of simple machines.


Simple machines

Archimedes first introduced the idea of ​​the simple machine around the third century BC. In his book, he introduces three simple machines: lever, pulley and screw. By examining the lever, Archimedes discovered the principle of mechanical advantage

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