Final answer:
When a motorcyclist pulls back on the right handlebar, it causes the motorcycle to tip to the left and produce a left turn. This happens due to the gyroscopic effects and vector aspects of angular momentum.
Step-by-step explanation:
When a motorcyclist pulls back lightly on the right handlebar, it causes the motorcycle to tip to the left and produce a left turn. This happens due to the gyroscopic effects and vector aspects of angular momentum.
As the motorcycle moves forward at a high speed, the spinning wheels create a gyroscopic effect, which resists changes in the motorcycle's orientation.
By pulling back on the right handlebar, the rider changes the direction of the angular momentum, causing the motorcycle to lean and turn to the left.
This phenomenon is similar to how gyroscopes used in guidance systems maintain a constant direction of angular momentum even when subjected to large forces and accelerations. The consistent direction of angular momentum allows the motorcycle to turn left when the rider pulls back lightly on the right handlebar.