New to the metric system

[Ron Cook]

Hi All,
I am new to the forum and new to the metric system. I should have become comfortable with it a long time ago, but I guess better late then never.

It all seems straightforward except for the Newton. Is there a correlation between 9.81 Newtons per kg and the acceleration of gravity at 9.81 m/s squared?

Thanks,

Ron

[boby boy]

I do Believe so.

[Skippy]

Right, the Newtons would be the weight. W=mg.

[Raggi_Thor]

For practicality, say g=10 and density of water=1 (1kg/l = 1000kg/m3).

[clarsen123]

Metric is a whole lot easier than English, just break down everything into it's component units, string them along and see what cancels out. Much fewer funky multipliers. Actually, a Newton is a measurement of force N=(kg*m)/s^2, or can be described as Force=mass*gravity as the previous post says. It's another way of stating Force=mass*acceleration, where the acceleration is gravity (9.81m/s^2). If you divide a Newton by a kg, the mass (kg) units cancel, leaving you acceleration with (m/s^2) and the 9.81. Weight is actually a force W=m*g, not to be confused with mass, which exists even in zero gravity, and what causes intertia. Here's how I set up the equation. Hope this helps!

N
-- =
kg

kg * m
-------- =
kg * s^2

m
---
s^2

[Ron Cook]

Hay Guys,

Thanks for the metric system input, yes it helps. I know I wil have more questions later.

Ron