korean laminated draw/force

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Graph is based on empirical data (thick lines) and mathematical equations (thin lines) .

red: SMG long, semihorn, marked 75,5 lbs @28
data:
draw 28? : force = 68,16 lbs, stored energy 99,23 joules
draw 29,5? : force = 74,92 lbs, stored energy 111,49 joules
draw 33? : force = 98,48 lbs, stored energy 145,69 joules



green: SMG standard, marked 70 lbs @28?
data:
draw 28? : force = 63,47 lbs, stored energy 90,53 joules
draw 29,5? : force = 70,31 lbs, stored energy 102,01 joules
drawe 33? : forta = 98,48 lbs, stored energy 134,69 joules

yellow: YMG standard, marked 65 lbs @ 28?
data:
draw 28? : force = 60,55 lbs, stored energy 84,08 joules
draw 29? : force = 64,86 lbs, stored energy 91,26 joules
draw 33? : force = 89,96 lbs, stored energy 126,08 joules

brown: SMG long, marked 50 lbs @28?
data:
draw 28? : force = 47,05 lbs, stored energy 69,46 joules
draw 29? : force = 50,02 lbs, stored energy 75,04 joules
draw 33? : force = 72,97 lbs, stored energy 102,46 joules

mauve: SMG standard, marked 49 lbs @28?
data:
draw 28? : force = 46,67 lbs, stored energy 63,67 joules
draw 29? : force = 50,47 lbs, stored energy 69,24 joules
draw 33? : force = 73,22 lbs, stored energy 97,00 joules

blue: SMG standard, marked 22 lbs @28?
data:
draw 28? : force = 20,08 lbs, stored energy 29,69 joules
draw 29,5? : force = 22,41 lbs, stored energy 33,45 joules
draw 33? : force = 31,92 lbs, stored energy 44,32 joules
draw 35? : force = 42,64 lbs, stored energy 52,85 joules

Mathematical approximation:
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