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Relevant Knowledge
•The Wheel is considered as one of the most important mechanical inventions of all time
•The invention of the Wheel was perhaps in the late Neolithic age.
•4500 BC: Invention of the potter's wheel, Chalcolithic (Ubaid period)
•4500–3300 BC: Chalcolithic, earliest wheeled vehicles, domestication of the horse
•3300–2200 BC: Early Bronze Age
•2200–1550 BC: Middle Bronze Age, invention of the spoked wheel and the Chariot.
•The wheel was most likely invented in Mesopotamia (modern day Iraq) around 3500 BC. This means the Wheel is about 5,500 years old!
•The first use of the wheel for transportation was in Mesopotamian chariots in 3200 BC.
•There are many references to wheeled chariots in Indian mythology also dating to around 3,0
•Egyptians started using wheel with spokes, first in chariots around 2000 BC.
•Use of wheels seems to have started in Europe by 1400 BC. 00 BC.
•A wheel is a circular component that can rotate on its centre axis. From tiny watch gears to automobiles, jet engines and computer disk drives, the principle is the same.
•The oldest wooden wheel and its axle were found in 2003 in the Ljubljana Marshes near the capital of Slovenia.
•According to the radiocarbon dating, it is between 5,100 and 5,350 years old. It has a diameter of 72 centimeters (28”) and has been made of ash wood, whereas its axle has been made of oak.
Wheel Assembly
•Wheels, in conjunction with axles, allow heavy objects to be moved.
•A wheel greatly reduces friction by facilitating motion by rolling along with axle and enables efficient movement of any object.
•In order for wheels to rotate, a force needs to be applied to the wheel about its axis, either by gravity, or by application of an external force.
2500 B.C: Toy Cart from Indus Valley civilization
3000 B.C: Wagon of Bronze Age in Turkmenistan
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