Vector Angular Momentum of a Particle•A particle with momentum is at position from the origin O.•Its angular momentum about the origin is•This is in line with our definition for part of a rigid body rotating about an axis: but also works for a particle flying through space. prLrp=×Viewing the x-axis as coming out of the slide, this is a “right-handed” set of axes:ˆˆˆijk×=+prLrp=×Oxzym
Clicker Question•A particle moves along a straight line at constant speed. The line does not pass through the origin. Is the particle’s angular momentum about the origin constant?A.YesB.No
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