You are mixing apples and Tuesday FPS refers to feet per second or how fast a projectile is travelling. ft lbs refers to a measurement of recoil.
That is sort of like asking how many miles per hour does 100 horsepower equal. Ft lbs is energy, and FPS is speed. There IS a formula to calculate the energy (in foot lbs) of a bullet, but to use that, you need to know SPEED in FPS, and WEIGHT (in grains) of the bullet. A 40 grain bullet at 1000 fps is pretty weak. A 400 gr bullet at 1000 fps can drop a moose.
1 ft = 12 inch60 inch = (60/12) = 5 ft(1500 pounds) x (5 ft) = 7,500 foot-pounds
14nM is about 10.33 ft-lbs.
15 ft-lbs is about 20.34 newton meters.
(132 inches) x (1 ft / 12 inches) = 11 ft132 in-lb = 11 ft-lb
299.93 fps.
That is sort of like asking how many miles per hour does 100 horsepower equal. Ft lbs is energy, and FPS is speed. There IS a formula to calculate the energy (in foot lbs) of a bullet, but to use that, you need to know SPEED in FPS, and WEIGHT (in grains) of the bullet. A 40 grain bullet at 1000 fps is pretty weak. A 400 gr bullet at 1000 fps can drop a moose.
6
The value of gravity in fps system is 5.3 ft/s2.
152
4 ft and 90 pounds to 30 ft and 10 tons
Ft Lbs (Foot pounds) is a measure of force; where as pounds is a measure of weight. They are not comparable.
within 50 ft - 400 to 450 fps within 100 ft- 500 and up fps
25 inch pounds = 2.08333333 foot pounds
1 ft = 12 inch60 inch = (60/12) = 5 ft(1500 pounds) x (5 ft) = 7,500 foot-pounds
Ft/sec=Miles(x5280 ft/mi)/hour(x3600 sec/hr)
14nM is about 10.33 ft-lbs.