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

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Wikipedia about newton

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

Definition

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 metre per second squared. Algebraically:

{\rm 1~N = 1~\frac{kg\cdot m}{s^2}}.

Examples

  • 1 N is the force of earth's gravity on an object with a mass of about 102 g (frac: 9.8 kg) (such as a small apple).
  • On Earth's surface, a mass of 1 kg exerts a force of approximately 9.80665 N 1 (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 dot product of force and distance is mechanical work. 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 states that the work done on a body is equal to the change in energy of the body. 1 N·m = 1 J (joule), the SI unit of energy.
  • It is common to see forces expressed in kilonewtons or kN, where 1 kN = 1 000 N.
  • A tonne (metric ton)=(1 000 kg) exerts a force of 9.80665 kN (or 1 000 kgf) under standard gravity conditions on Earth.

Notes

1 kp = 9.80665 N. kp is kilopond 1 kilopond was he measure of 1 kilogram on Earth.

in 1960 this measure was changed to newtons

1 kg on the surface of the Earth weighs 9.8 N, because 1 kg × 9.8 m/s = 9.8 N.

References

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

http://www.sengpielaudio.com/calculator-forceunits.htm

See also

  • International System of Units (SI)
  • The joule, which is the SI unit of energy, equivalent to 1 newton exerted over a distance of 1 metre.
  • The pascal, the SI unit of pressure, equivalent to 1 newton acting on an area of 1 square metre.
  • The kilogram-force, which is the force exerted by Earth's gravity at sea level on one kilogram of mass.
  • Force gauge

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Man gets 13 years for attack on Newton resident

New Jersey HeraldBy TOM HOWELL JR. Newton resident Doris Zayacz said she'll never understand why she was targeted for a April 30, 2005, knife attack in her Lincoln Place driveway.http://www.njherald.com/story/27PETERSEN-web

Newton Township shooting follow

WYTV YoungstownOne thing you can count on when a policeman is shot is that everything will be done to find out who who did it. There's this sense of urgency to solve the crime, and solve it fast. Rarely does a police shooting case linger on. But it's been almost four weeks now since Newton Township patrol-man Tom Colosimo was shot and still investigators cannot piece together exactly what happened.http://www.wytv.com/news/local/25911384.html

Wayne Newton Post 346 routs Greene County Post 196 12-2 in eight innings

Terre Haute Tribune StarThe Wayne Newton Post 346 baseball team has kicked back, relaxed, and made itself comfortable in the batter’s box during its American Legion baseball sectional this week at Terre Haute North.http://www.tribstar.com/sports/local_story_207230907.html

SBI investigates Newton Fire

WBTV CharlotteTerms of Use: We welcome your participation in our community. Please keep your comments civil and on point. Notify us of any inappropriate comments by clicking the “Mark as Offensive” link. You must be at least 13 years of age to post comments.http://www.wbtv.com/Global/story.asp?S=8742598

Newton Township shooting follow

WKBN 27 YoungstownSince the July 7th shooting of Newton Township Police Officer Tom Colosimo the Trumbull County Sheriff's Department has spent more than one hundred hours investigating but are still unable to prove he was shot on the job.http://www.wkbn.com/news/local/25911384.html

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Newton County woman receives new home

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State, Newton work to end impasse over high school money

Boston GlobeWith less than three months remaining before cash designated for the Newton North High School construction project is expected to run out, Newton officials say they are working to resolve an impasse with the Massachusetts School Building Authority ... http://www.boston.com/bostonglobe/regional_editions/globe_we...

John McCain, Sarah Palin pass on city premiere of Oliver Stone's 'W.'

New York Daily News'W.' director Oliver Stone at the premiere Tuesday, flanked by Elizabeth Banks (l.), who plays First Lady Laura Bush in the movie, and Thandie Newton, who plays Secretary of State Condoleezza Rice. The red carpet was rolled out Tuesday night for ... http://www.nydailynews.com/gossip/2008/10/15/2008-10-15_john...

Short Orders

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Josh Brolin 'insulted' by offer to play George W Bush

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City of Newton, MA

Contains city department information, permit applications, history, maps, and local links.http://www.ci.newton.ma.us/
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Answers for Newton

lizology101

How can I find the first estimation to use when approximating with Newton's Method?

lizology101For the initial guess, you really can pull a number out of nowhere. If there are multiple roots to the equation it may point you at different ones given different initial guesses. As you when to s...
Mackenzie S

How does Newton's Law of Universal Gravitation relate to the formation of high tides?

Mackenzie SNewtons law states that all objects are attracted to each other. The moon as it obits the earth pulls on the earth and oceans causing the land and ocean to bulge up towards the moon. So as an locat...
trofav84

How does Newton's 3rd law explain the expansion of our Universe?

trofav84Newton's third law doesn't explain the expansion of the Universe. Newton's laws predict the motion of everyday objects at speeds much slower than light.
Tiger

How did Issaac Newton and Einstein do it, how did they get to their goal?

TigerThis is a great question. Newton did not even have a clock to work with yet he solved the problem of timing the fall of objects in earth's gravitational field to an amazing degree of accuracy, it is b...
tophee

How do you explain Newton's Laws of Motion to a 4th grader?

topheeBy examples. A soccer game in space ( no gravity or friction). The ball remains at rest until acted on by a net force (kick). Doesn't stop unless someone stops it. The Concept of the ball stopping bec...

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