New to the metric system

Discussion in 'Boat Design' started by Ron Cook, Mar 2, 2005.

  1. Ron Cook
    Joined: Jan 2005
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    Location: Tampa Florida

    Ron Cook Junior Member

    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
     
  2. boby boy
    Joined: Mar 2005
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    boby boy owner of cla boat design

    I do Believe so.
     
  3. Skippy
    Joined: Nov 2004
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    Skippy Senior Member

    Right, the Newtons would be the weight. W=mg.
     
  4. Raggi_Thor
    Joined: Jan 2004
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    Location: Trondheim, NORWAY

    Raggi_Thor Nav.arch/Designer/Builder

    For practicality, say g=10 and density of water=1 (1kg/l = 1000kg/m3).
     
  5. clarsen123
    Joined: Mar 2005
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    clarsen123 New Member

    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
     

  6. Ron Cook
    Joined: Jan 2005
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    Location: Tampa Florida

    Ron Cook Junior Member

    Hay Guys,

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

    Ron
     
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