A solid disk, spinning counter-clockwise, has a mass of #4 kg# and a radius of #7 m#. If a point on the edge of the disk is moving at #8 m/s# in the direction perpendicular to the disk's radius, what is the disk's angular momentum and velocity?
Let's start by calculating the angular velocity
we use the equation
The moment of inertia of the solid disc
Then the angular momentum is