Here's how it works in the wizarding world:
* Magical Properties: Broomsticks themselves are imbued with magical properties. They are crafted with special woods and enchanted with spells to make them responsive to a witch or wizard's will.
* The Rider's Will: The broom reacts to the rider's thoughts and movements. You can think about turning, speeding up, or slowing down, and the broom obeys.
* Charms and Spells: Advanced broom flying involves using spells to enhance speed, agility, and maneuverability. These spells can make a broom practically fly like an airplane.
In essence, the broomstick is a magical extension of the wizard's will. It's not a physical object responding to aerodynamic forces like a plane, but a magical object responding to a magical connection.
Of course, in the real world, we don't have such things. Broomstick flying is a fun fantasy element that adds to the magical world of Harry Potter!