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What is a Newton?

Date: 04/28/2002 at 10:56:17
From: Jenny
Subject: Weights and measures

What is the weight in newtons of a 100-kg person?


Date: 04/30/2002 at 13:22:06
From: Doctor Sarah
Subject: Re: Weights and measures

Hi Jenny - thanks for writing to Dr. Math.

A newton is a unit of force, not weight.  See Russ Rowlett's _How 
Many? A Dictionary of Units of Measurement_:

   http://www.unc.edu/~rowlett/units/dictN.html 

newton (N) 
the SI unit of force. A force of one newton will accelerate a mass of 
one kilogram at the rate of one meter per second per second. The 
corresponding unit in the CGS system is the dyne; there are 105 dynes 
in one newton. In traditional English terms, one newton is about 
0.224 809 pounds of force (lbf) or 7.233 01 poundals. The newton is 
also equal to about 0.101 972 kilograms of force (kgf) or kiloponds 
(kp). The newton is named for Isaac Newton (1642-1727), the British 
mathematician, physicist, and natural philosopher. He was the first 
person to understand clearly the relationship between force (F), mass 
(m), and acceleration (a) expressed by the formula F = ma. 

- Doctor Sarah, The Math Forum
  http://mathforum.org/dr.math/ 
Associated Topics:
High School Physics/Chemistry
Middle School Terms/Units of Measurement

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