Angular Momentum
The angular momentum of a mass rotating in a circle of
radius
with angular velocity
(rad/s), is defined by


Relation of Angular to Linear Momentum
Recall (§B.3) that the momentum of a mass traveling
with velocity
in a straight line is given by










Thus, the angular momentum



Linear momentum can be viewed as a renormalized special case of angular momentum in which the radius of rotation goes to infinity.
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