# A cylinder has inner and outer radii of #2 cm# and #3 cm#, respectively, and a mass of #1 kg#. If the cylinder's frequency of counterclockwise rotation about its center changes from #10 Hz# to #12 Hz#, by how much does its angular momentum change?

##### 1 Answer

Jun 19, 2017

The change in angular momentum is

#### Explanation:

The angular momentum is

where

The mass,

For a cylinder,

So,

The change in angular momentum is

The change in angular velocity is

The change in angular momentum is