finding knetic energy

youngbowhunter93 · 02-20-2008, 05:10 PM

i was wondering if any of you guys knew a formula to find knetic energy if so please post thanks

davepjr71 · 02-20-2008, 07:03 PM

Here you go.

velocity x velocity x total arrow weight (in grains) divided by 450,240

In addition, here's a basic guide for ke

KE

Hunting Usage

< 25 ft. lbs.
Small Game

25-41 ft. lbs.
Medium Game (deer, antelope, etc.)

42-65 ft. lbs.
Large Game (elk, black bear, wild boar, etc.)

> 65 ft. lbs.
Toughest Game (Cape Buffalo, Grizzly, etc.)

BruceW63 · 02-20-2008, 07:03 PM

The formula for kinetic energy is: one-half times mass times velocity times velocity. Watch the units, though!

Edit: oops, similar post to the one just posted. sorry.

passthru79 · 02-20-2008, 08:27 PM

Goldtip has a KE calculator on their website all you have to do is enter your speed and arrow weight and it does the rest for you. They also have a FOC calculator if you interested.

Roskoe · 02-20-2008, 08:42 PM

As a "rule of thumb", it is usually very close to the draw weight of your compound bow - a little higher for heavy arrows and a little less for lighter arrows.

davepjr71 · 02-21-2008, 03:32 AM

Dave,

If you haven't found the brass inserts yet? Lancaster Archery Supply carries them. www.lancasterarchery.com

MeanV2 · 02-21-2008, 05:57 AM

Here's a good one!

http://www.bowhuntinginfo.com/KineticEnergyNew.htm

Dan

Matt / PA · 02-21-2008, 07:12 AM

or here: (All sorts of ballistics calculators)

www.bowjackson.com