Angular Momentum

We had very little notes today, so I decided not to make a Powerpoint. Instead, I'll take pictures of the board as we go and post them here as soon as possible. EDIT: SEE BELOW.

Homework is Ch. 8 (p. 271) #55 (look up the mass, radius, and orbital radius of Earth with The Google), 61, 62

Finding the angular momentum of a bike wheel:

Finding the angular momentum with a clump of mud sticking to the rim of the wheel:

Finding the new angular speed of a start that has shrunk dramatically:

One last picture with all of the equations: