Originally Posted by
PatrickGSR94
Linear velocity may be the same, but the angular velocity is higher by however much the difference is in tire circumference. 35% higher in the case of a 20" tire vs. 700c tire.
Yes, I get that.
When you fling mud off of a tire, you aren't really flinging it off of the tire so much as the mud stops sticking to the tire and keeps going whatever direction it was going in*. So it's the linear speed that matters here.
Cheers,
Charles
* When mud flings off of a spinning wheel, it isn't the so-call
centrifugal force (which is often called a
fictitious force)throwing it off the wheel. Rather, it is the sudden lack of
centripedal force that stops acting on the mud and therefore the mud happily moving along how it was (meaning tangentially to the wheel).