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Old 04-16-2007 | 12:45 PM
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bow_hunter44
Fork Horn
 
Joined: Feb 2007
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From: Idaho
Default RE: Who said that physics wasn't fun?

ORIGINAL: gators37

There is another item that I am interested in (which was briefly mentioned in some of the previous post)andwill be specific to a particular bow and that is if the bow "transfer to arrow" efficiency is indeed a curve (to a point where the slope changes which should indicate max. efficiency) or does the energy efficiency in the transfer just keep going up as you make the arrow heavier and heavier.
Good question. I'm not sure I'm in a postion to do the question justice. But I can try. Certainly as the mass of the arrow goes up, the effeciency of the bow to transfer energy to the arrow goes up - more energy goes into the motion of the arrow while less to oscillation of the arrow (vibrational energy), sound energy, etc. However there has to be a point of deminishing returns in increasing the mass of the arrow relative to effeciency. At some point the mass of the arrow would be so great that upon releasing the string the inertia of the arrow would propell the bow backwards. The effeciency of that energy transfer might be wonderful, but of no particular value to an archer. I don't really know what the curve for effeciency looks like - but in the best of circumstances, it has to peak at 100%
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