Convert 55lb-65lb Draw Weight to 1/2kx^2

logaliciouz · Dec 12, 2010

I'm Canadian, and I'm trying to convert the draw weight (55lb-65lb) into something I can put into 1/2kx^2. Please help!

K^2 · Dec 12, 2010

You can use pounds-of-force directly and using feet for x, so long as you are happy with coefficient k being in pounds/foot, which are standard imperial units for spring coefficient.

Keep in mind that you'll get energy in foot-pounds. If you want to get energy in Joules, you should use meters for x and convert pounds-of-force to Newtons. There are 4.445 Newtons to a pound.

logaliciouz · Dec 12, 2010

okay thanks, I actually tried using a different method of finding it, using the velocity of the arrow, and it ended up working

Convert 55lb-65lb Draw Weight to 1/2kx^2

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Convert 55lb-65lb Draw Weight to 1/2kx^2

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