# A solid disk, spinning counter-clockwise, has a mass of #3 kg# and a radius of #3 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?

##### 1 Answer

Oct 25, 2016

#### Answer:

The disc angular momentum is

And the angular velocity is

#### Explanation:

The angular momentum is given by

Where

And

The moment inertia of a disc is given by

where

And

Also we use the formula

So

And the angular momentum is