Bicycle Wheel Drop
What did you observe?
Dropping a bicycle wheel with axis attached to a rope
What kinds of forces did the bicycle wheel experience?
Bicycle Wheel Drop
What did you observe?
Spin the wheel and then let go! ...
What kinds of forces did the bicycle wheel experience when it was dropped after spinning?
Bicycle Wheel Drop
Why didn’t it drop?
Why did the bicycle wheel continue rotating?
Bicycle Wheel Drop
Conservation of Angular Momentum!
L = mvr
L = angular momentum
m = mass
v = velocity
r = radius
Hula Hoop with Backspin