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Re: Name that force



Ludwik Kowalski wrote:

On Tuesday, Oct 28, 2003, at 06:11 US/Pacific, sampere wrote:



How do wheels roll on a friction free surface? What force makes them
roll?



Suppose the car was already rolling (under
ordinary conditions) and then entered an ideal
world without friction. The wheels continue to
turn in contact with a friction-free track.
Ludwik Kowalski


If it's totally friction free, then the rotational motion is uncoupled
from the linear motion. It translates at constant velocity and spins
about its axis with constant angular velocity.
James Mackey