## Angular Momentum - 2

Angular momentum = (rotational mass) x (angular velocity)

L= IThe angular velocity and the angular momentum

Lare bothvectors!The vector lies along the axis of rotation and points toward one end or the other according to the "right hand rule":

Rght Hand RuleJust as we wrote

for the linear case, we can also write

for the rotational equivalent.

Remember, torque is a

vector.When we wroteor

randFarevectorsand their "cross product" or "vector product" isalsoavector!(c) 2002, Doug Davis; all rights reserved

Ang Mom 1Rotational ForceReturn to ToC, Rotational Motion