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Thread: KG force to newtons

  1. #1
    Potts_01
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    KG force to newtons

    I am trying to work out newton force from a KG load. Do I just need to multiply it by 9.80665? The force I am looking at is water flowing horizontally, There is no fall, if I have 1000kg of water (1000 litres) of water moving horizontally is this equal to 9806 newtons?

  2. #2
    Technical Fellow Kelly_Bramble's Avatar
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    Yes,

    1 Kilogram force = 9.80665 Newtons..

    Not sure what your question is though... The weight of water?

    Quote Originally Posted by Potts_01 View Post
    I am trying to work out newton force from a KG load. Do I just need to multiply it by 9.80665? The force I am looking at is water flowing horizontally, There is no fall, if I have 1000kg of water (1000 litres) of water moving horizontally is this equal to 9806 newtons?
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  3. #3
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    If you want the force of the water pushing forwards then you need to indicate velocity.

  4. #4
    Principle Engineer
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    1000 kg of water weighs 9.8x1000newtons

    1000kg oaf water moving with a velocity has momentum, not force.

    Force is the time rate of change of change of momentum.

    So you see that a still body of water only has the property of mass

    Force is needed to change it's momentum.
    A

  5. #5
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    Quote Originally Posted by zeke View Post
    1000kg oaf water moving with a velocity has momentum, not force.
    Yup, but I think we are dealing with a very non-techy person here and it sounded like he wanted to know what he could push or had to hold back. "Force" seemed more appropriate in this instance.

  6. #6
    Principle Engineer
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    Yeah, but the concept of force in his context may be hard to explain, since we may not understand what he wants.

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