The answer is: fulcrum

If the wheel has a spoke that rotates around an axis, the axis is counted. This is because the axle is the fulcrum around which the rod rotates, making it the center point or support of the wheel. The axis is the point at which a rotational force is applied, allowing the wheel to turn. The axle also acts as a support structure, keeping the wheel in place and helping to absorb shocks while the vehicle is in motion. Additionally, the axle helps transfer power from the engine to the wheels, allowing them to rotate and move the vehicle. Without a hub, the wheel would not be able to move or rotate.

If the wheel has a spoke that rotates around an axis, the axis is counted. This is because the axle is the fulcrum, or pivot point, around which the wheel turns. The axle is the fixed part of the wheel, which provides a stable base for the spoke to rotate around. The axle also transmits the wheel's motion to other parts of the machine, and can be used to control or change the direction or speed of the wheel. Therefore, the axle is an essential component of the wheel, and its rotation must be taken into account when calculating the motion or speed of any machine that has wheels.

If the wheel has a spoke that rotates around an axis, the axis is counted. This is because the axis is a type of fulcrum, an object that the lever turns. The wheel acts as a lever in this case, and the axle is the fulcrum, allowing the wheel to turn. This is a fundamental principle of physics and is used in many applications, such as building machines and vehicles.