People who like to ride a unicycle may find that they are stable in acrobatic performances, able to stay where they are, or move forward or backward flexibly. So do you know why the center of gravity is so high that the unicycle can stand upright? The reason?It turns out that the secret to standing up for a unicycle is all about human driving. When the driver and the body tilt forward, the ground facing the wheel of the support force no longer passes the center of gravity, will produce the torque of the center of gravity. The moment is the external cause that drives the object to rotate, and its magnitude is equal to the distance between the force times the force and the center of mass. Without control, the unicycle will fall along the direction of the torque. At this point, the driver forces the wheel to push the wheel forward through the pedal and the sprocket. The friction of the wheel is generated by the friction of the ground, and the torque of the center of gravity is the opposite of the overturning moment of the supporting force, which ACTS as a stabilizing force to restore the body to its upright position. Proper control of the force of the pedals can keep the unicycle in place. If you push harder, the wheels will roll forward. To get the wheelbarrow back, the driver will lean back slightly, and the pedals in the opposite direction will cause the wheel to roll backward, and the backward ground friction will balance the overturning moment.

   If you use an automatic control system instead of a motorist's control of a unicycle, you can design a new type of vehicle that can balance itself. This is the "segway", or "power scooter", that has emerged in recent years. It consists of a horizontal chassis and two side-by-side wheels. The wheel is battery-operated, and the vertical handle is used to control the direction. The driver stands on the chassis, and the center of gravity is similar to the wheelbarrow. The control system in the car keeps the driver upright and does not fall forward or backward.

   The above is the analysis of the principle that the unicycle does not fall, hoping to help you.