What is the principle of bicycle handlebars?

Update:18-03-2021
Summary: Handlebar: Handlebar, one of the essential parts of a bicycle, when riding a handle, cart, or cart held by the hand. Yo...
Handlebar: Handlebar, one of the essential parts of a bicycle, when riding a handle, cart, or cart held by the hand. You can't ride a bicycle without a handlebar. It is a handle held by the hand when riding a bicycle, pushing a cart, or pulling a cart. It is a steering device for motorcycles to control the direction, which is equivalent to the steering wheel of a car. The handlebars should be firmly installed in the body and keep the handlebars balanced. The handlebar is also the steering device for the bicycle to control the direction.
One of the components of a bicycle, a handle held by the hand when riding a bicycle, pushing a stroller, or pulling a bicycle. Hold it by hand to control the driving direction and control the balance car, so that the power can be better output to the target direction. It belongs to the main parts of the rickshaw body, such as bicycles, strollers, tricycles, etc.
Principle
Use the lever principle to turn the wheel and change the direction. Use the lever principle to control the vehicle and maintain balance.

The lever that controls the steering of the vehicle: The handlebar of the vehicle is a labor-saving lever. People can turn the handlebar with a small amount of force, and then control the wheels through the connecting piece, and finally control the direction of the vehicle's movement.

Control the lever of the vehicle balance car: The handlebar of the vehicle is a labor-saving lever. People can control the vehicle with a small amount of force to keep the vehicle balanced in the horizontal direction.