Angular Momentum

• The vector or cross product is another way to combine two vectors; it creates a vector perpendicular to both it the originals.
• The angular momentum of a body depends on the point chosen as the origin.
• The angular momentum of a body around a point is the cross product of the radius from the point to the body and the momentum of the body.
• Angular momentum is the rotational analog of linear momentum
• Just as the time derivative of linear momentum is force, the time derivative of angular momentum is torque.
• The angular momentum around a point of a body which moves directly towards that point is zero.

This lecture discusses material in Chapter 11 of Serway.

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