Angular momentum equations for angular velocity and point mass

[mogley76]

Homework Statement

give equations for angular momentum in terms of :
1. angular velocity
2. a point mass moving along the circumfrence of a circle with a tangential (linear) speed v.

Homework Equations

none

The Attempt at a Solution

1. is L= I w...angular vel = moment of inertia X angular velocity

2. I = mr^2im not too sure about the second one? can someone help??

 

[cepheid]

The second one is moment of inertia, not angular momentum. For the second one, just go back to the definition of angular momentum.