Originally Posted by Pedantic Stroke
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The important factor is speed here since kinetic energy quadruples when speed doubles so the actual weight of a cue is less important than the speed of it. Obviously the more off centre you hit the more the vector of thrust moves sideways relative to the direction of the cue travel since the vector of thrust always acts from the contact point through the centre of mass of the cue ball. Shaft deflection must come into play in my opinion but only because kinetic energy is deflected away from the impact point. Low deflection shafts can therefore not work for the reasons advertised since the difference of mass in the last 6 inches of a shaft is negligible. The only reason they throw less must be because of more deflection caused by hollowing out of the shaft.
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