Question

long answer what are machines​

Answer 1

Explanation:

is a human-made device that uses power to apply forces and control movement to perform an action. Machines can be driven by animals and people, by natural forces such as wind and water, and by chemical, thermal,Wheel, Wedge, and Screw. Compound Machines, or Engines, are innumerable.

The word engine used as a (near-) synonym both by Harris and in later language derives ultimately (via Old French) from Latin ingenium "ingenuity, an invention".

History Edit

Flint hand axe found in Winchester.

The hand axe, made by chipping flint to form a wedge, in the hands of a human transforms force and movement of the tool into a transverse splitting forces and movement of the workpiece. The hand axe is the first example of a wedge, the oldest of the six classic simple machines, from which most machines are based. The second oldest simple machine was the inclined plane (ramp),[6] which has been used since prehistoric times to move heavy objects.[7][8]

The other four simple machines were invented in the ancient Near East.[9] The wheel, along with the wheel and axle mechanism, was invented in Mesopotamia (modern Iraq) during the 5th millennium BC.[10] The lever mechanism first appeared around 5,000 years ago in the Near East, where it was used in a simple balance scale,[11] and to move large objects in ancient Egyptian technology.[12] The lever was also used in the shadoof water-lifting device, the first crane machine, which appeared in Mesopotamia circa 3000 BC,[11] and then in ancient Egyptian technology circa 2000 BC.[13] The earliest evidence of pulleys date back to Mesopotamia in the early 2nd millennium BC,[14] and ancient Egypt during the Twelfth Dynasty (1991-1802 BC).[15] The screw, the last of the simple machines to be invented,[16] first appeared in Mesopotamia during the Neo-Assyrian period (911-609) BC.[17] The Egyptian pyramids were built using three of the six simple machines, the inclined plane, the wedge, and the lever, to create structures like the Great Pyramid of Giza.[18]