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Force A force is that which when acting on a body that is free to move accelerates the motion of the body. The SI unit of force is the newton. 1 newton is defined as the force required to accelerate a mass of 1 kilogram by 1 metre per second per second. | Conversions | | | | | | | | 1 dyne | = | 1x10-5 N | | 1 poundal (pdl) | = | 0.138255 N | | 1 pound-force (lbf) | = | 4.44822 N | | 1 ton-force | | 9964.02 N | | 1 kilogram-force (kgf) | = | 9.80665 N | | 1 kip | = | 1000 lbf | | 1 sthene (sn) | = | 1000 N | | | Fundamental Forces | Force | Relative Strength | Range | | Strong | 1 | short ~10-15m | | Electroweak | | | | Electromagnetic | 10-2 | long 1/r2 | | Weak | 10-9 | short ~10-15m | | Gravitational | 10-39 | long 1/r2 |
Examples | Concorde (thrust dry) | 5.6x105N | | Concorde (thrust with afterburner) | 6.76x105N | | Boeing 747 (thrust with 4 Rolls-Royce RB211) | 1.059x106N | | Ariane 5 (thrust at launch) | 1.3x107N | | Saturn 5 (thrust at launch) | 3.402x107N |
See also: Centrifugal Force, Coriolis Force, External Force, Kilogram Force, Newton, Pound Force, SI Units, Sthene, Weak Force.
  
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