What are the physical properties of a mountain bike?

The physical properties of a mountain bike include its frame material (typically aluminum, carbon fiber, or steel), wheel size (commonly 26-inch, 27.5-inch, or 29-inch), suspension type (hardtail or full suspension), brake type (disc or rim), and tire tread pattern (knobby for off-road terrain). Additionally, the geometry of a mountain bike, such as the head tube angle, seat tube angle, and chainstay length, affects its handling and performance on different types of trails. The weight of a mountain bike is also a crucial physical property that can impact its agility and ease of maneuverability.