The newton (symbol: N) is the unit of force in the International System of Units (SI). It is defined as $1\backslash \; \backslash text\{kg\}\backslash cdot\; \backslash text\{m/s\}^2$, the force which gives a mass of 1 kilogram an acceleration of 1 metre per second per second. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically his second law of motion.
The units "metre per second squared" can be understood as measuring a rate of change in velocity per unit of time, i.e. an increase in velocity by 1 metre per second every second.
In 1946, the Conférence Générale des Poids et Mesures (CGPM) Resolution 2 standardized the unit of force in the MKS system of units to be the amount needed to accelerate 1 kilogram of mass at the rate of 1 metre per second squared. In 1948, the 9th CGPM Resolution 7 adopted the name newton for this force.
The connection to Newton comes from Newton's second law of motion, which states that the force exerted on an object is directly proportional to the acceleration hence acquired by that object, thus: $$F\; =\; ma,$$ where represents the mass of the object undergoing an acceleration . When using the SI unit of mass, the kilogram ($\backslash text\{kg\}$), and SI units for distance metre ($\backslash text\{m\}$), and time, second ($\backslash text\{s\}$) we arrive at the SI definition of the newton: $\backslash mathrm\{1\backslash \; kg\; \{\backslash cdot\}\; m/s^2\}.$
One kilonewton, 1 kN, is equivalent to , or about 100 kg of load under Earth gravity.
So, for example, a platform that shows it is rated at will safely support a load.

