bicylce

A bicycle, often called a bike, is a human-powered or motor-powered wheeled vehicle that is propelled by pedals and steered with handlebars. It typically has two wheels attached to a frame, one behind the other. The rider sits on a saddle and pushes pedals connected to a crankset, which turns a chain. This chain then drives the rear wheel, causing the bicycle to move forward.

Bicycles are used for transportation, recreation, and sport. They offer a sustainable and healthy way to travel, requiring no fuel and providing exercise. The design of bicycles has evolved significantly since their invention, with modern bikes featuring lightweight materials, advanced gearing systems, and various suspension types to suit different terrains and riding styles.

The basic components of a bicycle include the frame, wheels, tires, handlebars, saddle, pedals, crankset, and chain. Brakes are essential for slowing down and stopping. Different types of bicycles exist, such as road bikes for paved surfaces, mountain bikes for off-road trails, hybrid bikes for a mix of conditions, and BMX bikes for stunts and racing. The simplicity and efficiency of the bicycle have made it a globally popular mode of transport and a cherished recreational activity.