The newton (symbol: N) is the SI unit of force. It is named after Sir Isaac Newton in recognition of his work on classical mechanics. The International System of Units (abbreviated SI from the French language name Système International dUnités) is the modern form of the metric system. ... In physics, a net force acting on a body causes that body to accelerate; that is, to change its velocity. ... Sir Isaac Newton, PRS, (4 January [O.S. 25 December 1642] 1643 – 31 March [O.S. 20 March] 1727) was an English physicist, mathematician, astronomer, alchemist, inventor and natural philosopher who is regarded by many as the most influential scientist in history. ... In physics, classical mechanics or Newtonian mechanics is one of the two major sub-fields of study in the science of mechanics, which is concerned with the set of physical laws governing and mathematically describing the motions of bodies and aggregates of bodies. ...

Definition

A newton is the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared. Acceleration is the time rate of change of velocity, and at any point on a v_t graph, it is given by the gradient of the tangent to that point In physics, acceleration (symbol: a) is defined as the rate of change (or time derivative) of velocity. ... Mass is a property of a physical object that quantifies the amount of matter it contains. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ... Metres per second squared is the SI derived unit of acceleration (scalar) and (vector), defined by distance in metres divided by time in seconds and again divided by time in seconds. ...

1 N = 1 kg·m/s²

SI multiples

For the gravity on Earth is little less than 10 m/s², some people, after being forced to give up the gravitational metric system, began to use the decanewton (daN) as an approximate replacement of the kilopond (alias kilogram-force), which is 9,80665 N. This is similar to the issue of millibar (mbar) versus hectopascal (hPa). The International System of Units (symbol: SI) (for the French phrase Syst me International dUnit s) is the most widely used system of units. ... The deprecated unit kilogram-force (kgf) or kilopond (kp) is the force exerted by one kilogram of mass in standard Earth gravity (defined as exactly 9. ... The deprecated unit kilogram-force (kgf) or kilopond (kp) is the force exerted by one kilogram of mass in standard Earth gravity (defined as exactly 9. ... A millibar (mbar, also mb) is 1/1000th of a bar, a unit for measurement of pressure. ... The pascal (symbol Pa) is the SI unit of pressure. ...

Explanation

The notions of mass and force are often confused in everyday life, but must be kept separate in science and engineering. The newton was first used around 1904, but not until 1948 was it officially adopted by the General Conference on Weights and Measures (CGPM) as the name for the MKS unit of force. Rather fittingly, given the story about how Newton arrived at his theory of gravity after contemplating why an apple falls downwards, the mass of a small apple exerts a force of about 1 newton on Earth. Mass is a property of a physical object that quantifies the amount of matter it contains. ... In physics, a force is an external cause responsible for any change of a physical system. ... 1948 (MCMXLVIII) is a leap year starting on Thursday (link will take you to calendar). ... The Conférence générale des poids et mesures (General Conference on Weights and Measures or CGPM) is one of the three organizations established to maintain the SI system under the terms of the Metre Convention (1875). ... The International System of Units (symbol: SI) (for the French phrase Système International dUnités) is the most widely used system of units. ... It has been suggested that gravitation be merged into this article or section. ... Species Malus domestica Malus sieversii Apple is the fruit (pome) of the genus Malus belonging to the family Rosaceae, and is one of the most widely cultivated tree fruits. ...

Conversions

The International System of Units (abbreviated SI from the French language name Système International dUnités) is the modern form of the metric system. ... In physics, the dyne is a unit of force specified in the centimetre-gram-second (cgs) system of units, symbol dyn. One dyne is equal to exactly 10-5 newtons. ... The deprecated unit kilogram-force (kgf) or kilopond (kp) is the force exerted by one kilogram of mass in standard Earth gravity (defined as exactly 9. ... The pound-force is a non-SI unit of force or weight (properly abbreviated lbf or lbf). The pound-force is equal to a mass of one pound multiplied by the standard acceleration due to gravity on Earth (which is defined as exactly 9. ... The poundal is a non-SI unit of force. ... g (also gee, g-force or g-load) is a non-SI unit of acceleration defined as exactly 9. ... The pound is the name of a number of units of mass or weight, all in the range of 300 to 600 grams. ... A foot (plural: feet) is a non-SI unit of distance or length, measuring around a third of a meter. ...

See also

• Isaac Newton
• SI
• Dyne, the unit of force of the (mostly obsolete) CGS system, equal to 10 µN.
• Kilogram-force