How does one figure out the KE produced by one's set-up? I know there's a formula, but haven't found it as of yet. Thanks in advance.
-Tony
1/2 mass x velocity squared. Mass in kilograms and speed in meters per second = Joules of energy.
But why bother? It will be somewhere between 42 and 46 ft pounds of energy and STILL depend more on shot placement.
http://redhawk-archery.com/ke.php
Hopefully the link works. I used to use this back in my wheel days.
A better indicator of how a bow will perform is momentum, not kinetic energy. Here's an article that really gets into the technicality of it all: http://archeryreport.com/2009/11/arrow-kinetic-energy-momentum-archer/
And here is a quick calculator: http://archerycalculator.com/archery-kinetic-energy-and-momentum-calculator/
Formula for kinetic energy. (Speed X Speed) X arrow weight / 450240.
What Yellow Dog said^^^^^^^
Bisch
What Bisch said. :D
QuoteOriginally posted by Stumpkiller:
1/2 mass x velocity squared. Mass in kilograms and speed in meters per second = Joules of energy.
But why bother? It will be somewhere between 42 and 46 ft pounds of energy and STILL depend more on shot placement.
You need a lot of bow to reach those KE #. Real world # are much around 30-35 ft.pound and less for most of bowhunters.
KE= 43 is a 600 gr arrow at 180 fps. Far from the average set up...
QuoteOriginally posted by looper:
A better indicator of how a bow will perform is momentum, not kinetic energy. Here's an article that really gets into the technicality of it all: http://archeryreport.com/2009/11/arrow-kinetic-energy-momentum-archer/
And here is a quick calculator: http://archerycalculator.com/archery-kinetic-energy-and-momentum-calculator/
Great info Looper, I agree with the article written that both KE & momentum should be considered with equal importance.
Thanks very much, guys!
Looper, fantastic articles to be read there!!! Very informative, and a fun little "rabbit-hole" to go down.