On 22/06/18 22:01, Vir Campestris wrote:
On 22/06/2018 20:40, Chris Green wrote:
Does it*really*Â* work like that?Â* Tyres have steel or nylon bracing in
them to*stop*Â* them stretching much.Â* If you run on a flat tyre it
squishes somewhat but, unless it's actually skidding on the road
surface, the same circumferance will roll along the road surface for
each rotation.

Some of that circumference must rotate while it's off the ground.

The _radius_ at the bit on the ground is reduced, so it must spin the
tyre faster.


It would if a flat tyre was circular.

Since it isn't, you are talking relative ********

What is the radius of a tank track?


Andy


--
"A point of view can be a dangerous luxury when substituted for insight
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