because it have ring on it
what is a wheel and axle
The wheels and axle
an axle
what kind of stupid question is this? if the dia of the axle is larger then that of the wheels, the axle becomes the wheel and the "wheels" become the axle
pie + y= axis
On the rear wheels, it's the axle.
Some examples of items that use a wheel and axle are cars (wheels on the axles), bicycles (wheels connected to the axle of the pedals), and rolling luggage (wheels attached to an axle for easier transportation).
An axle is a common means of connecting the two wheels at the rear of the car.
steering wheeltire wheelsA wagon
A front axle holds the front wheels on and on front-wheel drive vehicles transmits engine torque to the wheels. --Ken
A rod to which a wheel or wheels is attached is an axle.
Epoxy the wheels to the axle.