Physics of Unicycling
Channel: Jonathan Abbott
Date: 2011-11-24

A full (1 hr) class on the physics of unicycling.
0:00 What is Mechanics
0:10 Newton's First Law
1:40 What makes unicycling hard
2:59 Newton's Second Law
3:15 Begin Free Body Diagram (had student participant draw it)
6:50 Finally see full free body diagram
7:30 Friction! Kinetic vs. Static
- Cool part: 8:25 to 10:00 on effect of pumping up tires vs. turning
11:15 Friction ex: easiest way to move a rock (or furniture)
(i.e. get kinetic friction and you will "spin" with lower coef. of friction)
13:09 360 deg spin on scooter =)
14:00 More friction; why you pump the brakes on ice
- Important part:14:19  Introducing the two methods of balance
15:25 *Countersteering*
Ex: idling 16:03
Ex: pogo/ bunny hops 20:20, on the wheel: 22:30
Ex: rolla bolla 23:35 
- Cool part: 26:05 How smart are your parents / how to turn on a bike / how to turn 
30:15 countersteering's relevance to motorcycles
31:00 fall in 2 directions
32:00 *What your arms do* (or skip to 37:00)
32:20 Torque ex: diablo
34:40 Torque for unicycles
37:00 Ex: Balance beam and arms
40:45 Why poles help tightropers
42:33 Importance of a helmet
44:06 Why idling on a giraffe is easier
46:45 Gravitation Potential Well and Turning
49:00 Riding a bike with no hands [battery died!]

I hope you find this helpful! Like if it helps you unicycle!
Also check out http://web.mit.edu/jabbott/www/physicsofbalance.html for a similar slideshow series. Thanks!