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=====Definition of a Central Force Lecture =====

{{courses:lecture:cflec:central_forces_notes.pdf|Central Forces Notes}} Section 5

  * The force between two masses is __central__ if:
    - It points along the line joining their individual centers of mass
    - The magnitude only depends on the distance between them.
  * Implications of an assumption of central force:
    - angular momentum is conserved
    - motion is in a plane


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