Uranus is a special planet because it has:
a horizontal axis of rotation
Oceans of water on the surface
Breathable air
No gravity
Uranus is the only planet in our solar system to have an almost horizontal axis of rotation.
A uniform wheel of radius R is set into rotation about its axis at an angular speed ω. This rotating wheel is now placed on a rough horizontal surface with its axis horizontal. Because of friction at the contact, the wheel accelerates forward and its rotation decelerates till the wheel starts pure rolling on the surface. Find the linear speed of the wheel after it starts pure rolling.
Which planet has an almost horizontal axis of rotation?