What a Machine is?

- A machine is any device that does any activity using energy which can also assist or make work easier. A simple machine is a device that helps make work easier; a device that makes it easier to move something, it also transforms the direction or magnitude of a force without consuming any energy. Some simple machines are a wheel, a pulley, a lever, a screw, and an inclined plane. Most machines consist of a number of elements, such as gears and ball bearings, that work together in a complex way. No matter how complex a machine, it is still based on the compounding of six types of simple machines. The six types of machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw.