Hot answers tagged rotational-dynamics
The "missing" kinetic energy is still there ... it's now in the rotation of the yo-yo.
If the sphere is not spinning, and the axis about which you are taking angular momentum stays through the same position in the sphere, then the relative velocity of the sphere to the axis will always be zero regardless of translational motion. Therefore, the angular momentum will be zero.
Only top voted, non community-wiki answers of a minimum length are eligible