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Conservation of Angular Momentum (view source)
Revision as of 16:28, October 14, 2007
, 16:28, October 14, 2007created new article: angular momentum
The angular momentum of a point mass about a point is defined as '''r''' x '''p''' where '''r''' is the position [[vector quantity|vector]] of the point mass with respect to the point of reference and '''p''' is the [[momentum|linear momentum]] vector of the point mass.
The principle of angular momentum can be applied to a system of particles by summing the angular momentum of each particle about the same point.
The [[derivative]] of angular momentum with respect to time is equal to the sum of the external moments ('''r''' x '''F''') applied to the system. From this, it can be concluded that in the absence of an external moment, angular momentum must be conserved.
The principle of angular momentum can be applied to a system of particles by summing the angular momentum of each particle about the same point.
The [[derivative]] of angular momentum with respect to time is equal to the sum of the external moments ('''r''' x '''F''') applied to the system. From this, it can be concluded that in the absence of an external moment, angular momentum must be conserved.