http://The Physics of Cycling! www.youtube.com › watchHow Bicycles Work
Bicycles are simple yet highly efficient machines that use mechanical principles to convert human effort into motion. At the core of a bicycle’s operation is transferring energy from the rider’s body to the wheels, allowing forward movement.
The process begins when the rider pushes down on the pedals, which are connected to a crankset. As the rider pedals, the crankset turns the chainring, which pulls the chain. The chain transmits this rotational energy to the rear wheel through gears. The rear wheel’s sprocket, connected to the chain, turns and propels the wheel forward. This rotation pushes the bicycle along the ground due to the friction between the tire and the road surface.
Gears play a crucial role in adjusting the resistance and speed of the bicycle. Lower gears make it easier to pedal uphill by increasing the mechanical advantage, while higher gears allow greater speed on flat surfaces by reducing the effort needed to maintain motion. The rider can shift gears using derailleurs, which move the chain between different sprockets on the chainring and rear cassette.
The bicycle’s frame and wheels provide stability and balance. The frame is usually made of lightweight yet strong materials like aluminum, steel, or carbon fiber. The wheels consist of a hub, spokes, and a rim, with air-filled tires that absorb shocks and improve traction. Steering is controlled through the handlebars, which turn the front wheel and allow the rider to navigate.
Braking systems, including rim brakes, disc brakes, and drum brakes, help the rider control speed and stop safely. When the brake levers are squeezed, pads or rotors create friction, slowing the wheels down.
The combination of mechanical efficiency, lightweight design, and human power makes the bicycle one of the most effective and environmentally friendly modes of transportation. Its simplicity and effectiveness have made it a timeless invention, widely used for commuting, recreation, and sport.
RELATED STORIES:
https://kids.britannica.com/kids/article/bicycle/399363
https://online.kidsdiscover.com/unit/bicycles/video/how-bicycles-work
https://frictionlabs.com/blog/how-it-works-the-bicycle
https://transportation.ucla.edu/blog/science-behind-riding-bicycle
TAKE ACTION:
Someone PLEASE tell me that science knows how bikes work
byu/aunt_snorlax inMBMBAM
