A cylinder has inner and outer radii of #9 cm# and #11 cm#, respectively, and a mass of #5 kg#. If the cylinder's frequency of counterclockwise rotation about its center changes from #12 Hz# to #7 Hz#, by how much does its angular momentum change?
1 Answer
Jan 4, 2018
The change in angular momentum is
Explanation:
The angular momentum is
where
and
The mass of the cylinder is
The radii of the cylinder are
For the cylinder, the moment of inertia is
So,
The change in angular velocity is
The change in angular momentum is