AskDefine | Define newton

Dictionary Definition



1 English mathematician and physicist; remembered for developing the calculus and for his law of gravitation and his three laws of motion (1642-1727) [syn: Isaac Newton, Sir Isaac Newton]
2 a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes [syn: N]

User Contributed Dictionary

see newton


Proper noun

  1. The name of many English places, from the Old English new settlement
  2. An English habitational surname for someone from any of these places
  3. Sir Isaac Newton, English physicist, mathematician, astronomer, alchemist, and natural philosopher



Newton, (plural: Newton)
  1. newton (unit of measure)

Extensive Definition

The newton (symbol: N) is the SI derived unit of force, named after Sir Isaac Newton in recognition of his work on classical mechanics.


The newton is the unit of force derived in the SI system; it is equal to the amount of force required to give a mass of one kilogram an acceleration of one meter per second squared . Algebraically:


  • 1 N is the force of earth's gravity on an object with a mass of about 102 g ( kg) (such as a small apple).
  • On Earth's surface, a mass of 1 kg exerts a force of approximately 9.81 N [down] (or 1 kgf). The approximation of 1 kg corresponding to 10 N is sometimes used as a rule of thumb in everyday life and in engineering.
  • The decanewton (daN) = 10 N is increasingly used when specifying load bearing capacity of items such as ropes and anti-vibration mounts, being approximately equivalent to the more familiar non-SI unit of force, the kgf.
  • The force of Earth's gravity on a human being with a mass of 70 kg is approximately 687 N.
  • The scalar product of force and distance is energy. Thus, in SI units, a force of 1 N exerted over a distance of 1 m is 1 N·m = 1 joule, the SI unit of energy.
  • Because a newton is a small force, it is common to see forces expressed in kilonewtons or kN, where 1 kN = 1 000 N.
  • A metric tonne (1 000 kg) exerts a force of 9.8 kN (or 1 000 kgf) under standard gravity conditions on Earth.



  • Halliday, Resnick and Walker Fundamentals of Physics, John Wiley & Sons ISBN 0471470619

See also

  • Joule, the SI unit of energy, equivalent to 1 newton exerted over a distance of 1 meter.
  • Pascal, the SI unit of pressure, equivalent to 1 newton acting on an area of 1 square meter.
  • Kilogram-force, the force exerted by Earth's gravity on one kilogram of mass.
newton in Afrikaans: Newton
newton in Arabic: نيوتن (وحدة)
newton in Asturian: Newton (unidá)
newton in Bengali: নিউটন (একক)
newton in Min Nan: Newton
newton in Belarusian: Ньютан (адзінка вымярэння)
newton in Belarusian (Tarashkevitsa): Ньютан (адзінка вымярэньня)
newton in Bosnian: Newton (jedinica)
newton in Breton: Newton
newton in Bulgarian: Нютон
newton in Catalan: Newton (unitat)
newton in Czech: Newton
newton in Danish: Newton (enhed)
newton in German: Newton (Einheit)
newton in Estonian: Njuuton
newton in Spanish: Newton (unidad)
newton in Esperanto: Neŭtono (unuo)
newton in Basque: Newton (unitatea)
newton in French: Newton (unité)
newton in Scottish Gaelic: Newton
newton in Galician: Newton (unidade)
newton in Classical Chinese: 牛頓 (單位)
newton in Korean: 뉴턴
newton in Croatian: Newton
newton in Indonesian: Newton
newton in Icelandic: Njúton
newton in Italian: Newton (unità di misura)
newton in Hebrew: ניוטון (מידה)
newton in Swahili (macrolanguage): Nyutoni
newton in Kurdish: Newton (yeke)
newton in Latin: Newtonium
newton in Latvian: Ņūtons
newton in Lithuanian: Niutonas
newton in Hungarian: Newton (mértékegység)
newton in Macedonian: Њутн
newton in Malayalam: ന്യൂട്ടണ്‍ (അളവ്)
newton in Malay (macrolanguage): Newton
newton in Dutch: Newton (eenheid)
newton in Newari: न्युटन
newton in Japanese: ニュートン
newton in Norwegian: Newton (enhet)
newton in Norwegian Nynorsk: Eininga newton
newton in Low German: Newton (Eenheit)
newton in Polish: Niuton
newton in Portuguese: Newton
newton in Kölsch: Newton (Mohß)
newton in Romanian: Newton
newton in Russian: Ньютон (единица измерения)
newton in Scots: Newton
newton in Simple English: Newton
newton in Slovak: Newton (jednotka)
newton in Slovenian: Njuton
newton in Serbian: Њутн (јединица)
newton in Serbo-Croatian: Njutn
newton in Finnish: Newton
newton in Swedish: Newton (enhet)
newton in Tamil: நியூட்டன்
newton in Thai: นิวตัน
newton in Vietnamese: Newton
newton in Turkish: Newton (birim)
newton in Ukrainian: Ньютон
newton in Contenese: 牛頓 (單位)
newton in Chinese: 牛頓 (單位)
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