A wheel is a circular block of hard and durable material with a hole at its centre. In a car, the wheel includes the rim, spokes and hub. The axle is place at the centre of the wheel, facilitating the rotation of the wheel. The first wooden wheels were invented in 4500-3300 BC.
How do wheels reduce friction?
Wheels help reduce friction by allowing contact surfaces to roll rather than drag or slide, thereby reducing kinetic friction. Wheels also reduce the amount of force needed to move an object.
What are the different parts of a wheel?
Wheels consist of a few major parts, including:
What is the purpose of a wheel?
The purpose of a wheel is to reduce friction and provide leverage, allowing heavy objects to be moved from one point to another. By reducing friction, wheels also facilitate easier and smoother movement and transportation of loads.