Artificial gravity in a rotating wheel

[Pranav Jha]

reading about circular motion has become very confusing for me thanks to the "centrifugal force". I have tried reading a lot of concepts presented on the internet but they haven't cleared away my doubts. In a rotating wheel, If there is no outward force acting on an object why does it remain in contact with the wall?

 

[Archosaur]

Because things like to stay going the same direction. At every point, the object wants to continue along a straight path, but the wall forces it to change direction, pushing it toward the center of the circle. Because this is a contact force, the force of the wall on the object is complimented by a force of the object on the wall.

 

[JDługosz]

http://xkcd.com/123/" says it all.