1. Why do bicycle tyres have uneven patterns?
The friction force is related to two factors: the pressure and the roughness of the contact surface. The greater the pressure, the greater the friction; The rougher the contact surface, the greater the friction. The bicycle outer tire has uneven patterns, which increase the friction by increasing the roughness between the bike and the ground, in order to prevent the bike from slipping.
2. Why can the bike stop after braking?
When braking, the friction between the brake pad and the rim will hinder the rotation of the rear wheel. The greater the hand pressure, the greater the pressure of the brake pad on the rim, the greater the friction generated, and the slower the rear wheel turns. If the brake is completely stopped, the friction between the rear wheel and the ground will become sliding friction (originally rolling friction, in the forward direction), and the backward direction will hinder the movement of the bike, so it will stop.
3. Where are steel balls installed on bicycles? Why does Anyang Steel Ball?
Steel balls are installed on the front axle, middle axle, rear axle, handlebar rotation, pedal rotation and other places of the bicycle.
People always want to be relaxed, flexible and labor-saving when riding bicycles. The friction can be greatly reduced by rolling instead of sliding, so the steel ball should be installed where the bicycle rotates. You can often add lubricating oil to make the contact surfaces separate from each other, so that the friction becomes smaller.
