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
| 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, Compression, Coriolis Force, External Force, Kilogram Force, Newton, Pound Force, SI Units, Sthene, Tension, Weak Force.
Subjects: Physics
- Further reading:
- Advanced Physics for You, , Nelson Thornes