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

Contents

Definition

Examples

Conversions

See also

References

Definition

A ''newton'' is the amount of force required to accelerate a body with a mass of one kilogram at a rate of one meter per second squared. Algebraically:
:.

Examples

★ 1 N is the force of Earth's gravity on an apple with a mass of about 102 g ( kg).

★ On Earth's surface, a mass of 1 kg exerts a force of approximately 9.8 N on its support. The approximation of 1 kg corresponding to 10 N is sometimes used as a rule of thumb in everyday life and in engineering (except where strict accuracy is required).

★ The force of Earth's gravity on a human being with a mass of 70 kg is approximately 686 N.

★ The scalar product of force and distance (N×m)— a force of 1 N carried out over a distance of 1 m— is one joule, the basic unit of energy in the SI.

Conversions

See also

★ Pascal a unit of pressure defined by one newton acting over a square meter

References