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Force applied at centre of mass

  1. Oct 4, 2007 #1
    If a force is applied at centre of mass the object will only translate and not rotate. Can anyone proove this mathematically?
     
  2. jcsd
  3. Oct 4, 2007 #2
    Torque is the cross product of the vector from the center of mass to the point where the force is applied (r), and the force. If r is zero, or r is parallel to the force, there will be no torque, and so no rotational force.
     
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