A cylinder has inner and outer radii of 4 cm4cm and 8 cm8cm, respectively, and a mass of 3 kg3kg. If the cylinder's frequency of counterclockwise rotation about its center changes from 5 Hz5Hz to 7 Hz7Hz, by how much does its angular momentum change?
1 Answer
Feb 3, 2017
The aswer is
Explanation:
The angular momentum is
where
and
The change of angular momentum is
For a cylinder,
So,