Newton

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Newton

The newton (symbol: N) is the SI

International System of Units

The International System of Units is the modern form of the metric system and is generally a system devised around the convenience of the number ten....
derived unit

SI derived unit

SI derived units are part of the SI system of measurement Units of measurements and are derived from the seven SI base units.Note that while the names of all SI units are in lowercase, the symbols of units named after people are written with an initial capital letter ....
of force

Force

In physics, a force is that which can cause an object with mass to change its velocity. Force has both Euclidean_vector#Length of a vector and Direction , making it a Vector quantity....
, named after Isaac Newton

Isaac Newton

Sir Isaac Newton, Fellow of the Royal Society was an English people physicist, mathematician, Astronomy, Natural philosophy, Alchemy, and Theology and one of the the 100 in human history....
in recognition of his work on classical mechanics

Classical mechanics

Classical mechanics is used for describing the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies....
.

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Definition

The newton is the unit of force derived in the SI system; it is equal to the amount of force required to accelerate a mass

Mass

In physical science, mass refers to the degree of acceleration a body acquires when subject to a force: bodies with greater mass are accelerated less by the same force....
of one kilogram

Kilogram

The kilogram or kilogrammeThe spelling kilogram is used by the International Committee for Weights and Measures and the U.S....
at a rate of one meter per second

Second

The second , sometimes abbreviated sec., is the name of a units of measurement of time, and is the International System of Units SI base unit of time....
per second. Algebraically:

Examples

1 N is the force of Earth's gravity
Earth's gravity

Earth's gravity, denoted by g, refers to the acceleration that the Earth exerts on objects on or near its surface. Its strength is usually quoted in terms of falling bodies , which in International System of Units is measured in m/s? ....
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 9.80665 N [down] (or 1 kgf
Kilogram-force

The unit kilogram-force or kilopond is defined as the magnitude of the force exerted on one kilogram of mass by a gravitational field ....
). The approximation of 1 kg corresponding to 10 N is sometimes used as a rule of thumb in everyday life and in engineering.
The force of Earth's gravity on a human being with a mass of 70 kg is approximately 687 N.
The dot product
Dot product

In mathematics, the dot product, also known as the scalar product, is an operation which takes two vector over the real numbers R and returns a real-valued scalar quantity....
of force and distance is mechanical work
Mechanical work

In physics, mechanical work is the amount of energy transferred by a force acting through a distance. Like energy, it is a scalar quantity, with SI of joules....
. Thus, in SI units, a force of 1 N exerted over a distance of 1 m is 1 N·m of work. The Work-Energy Theorem
Mechanical work

In physics, mechanical work is the amount of energy transferred by a force acting through a distance. Like energy, it is a scalar quantity, with SI of joules....
states that the work done on a body is equal to the change in energy of the body. 1 N·m = 1 J (joule
Joule

The joule is the SI derived unit of energy in the International System of Units. It is defined as:One joule is the amount of energy required to perform the following actions:...
), the SI unit of energy.
It is common to see forces expressed in kilonewtons or kN, where 1 kN = 1 000 N.

Newton

Definition

Examples

See also