The center of percussion is the point on an object where a perpendicular impact will produce translational and rotational forces which perfectly cancel each other out at some given pivot point, so that the pivot will not be moving momentarily after the impulse. The same point is called the center of oscillation for the object suspended from the pivot as a pendulum.
Centers of percussion are often discussed in the context of a bat, racquet, sword or other long thin objects. The center of percussion may or may not be the "sweet spot" depending on the pivot point chosen.
Read more about Center Of Percussion: Further Explanation, Calculating The Center of Percussion, Center of Percussion of A Uniform Beam, Relation To The Sweet Spot, Application To Swordmaking
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