玟均 發問時間: 社會與文化語言 · 1 0 年前

fluid pressure 的算法 我知道 可是為什麼?

fluid pressure的算法

fluid pressure=force除area

但是 為什麼

force=速度

area=面積

這是同學下的結論 先說 我是usa LA的華裔

How is fluid pressure meaured?

You mess ure fluid pressure by dividing force by Area

1 個解答

評分
  • 1 0 年前
    最佳解答

    In physics, the pressure is defined below:

    Pressure (symbol: p) is the force per unit area applied on a surface in

    a direction perpendicular to that surface. Mathematically: p=F/A, where:

    p is the pressure

    F is the normal force

    A is the area.

    Therefore, pressure is a different concept from the force itself. For example, there is an object weighing 1 kg and in a cone or a pyramid shape. It's quite different you'll feel if the object is placed on your palm "with the tip up and the base down" from if it is placed "with the tip down and the base up". Because, in the former way, the weight of the object is evenly distributed over the entire base whose area is much larger than tip's so that the weight is largely dispersed to result in a smaller "pressure(Force per area)" to your palm's skin while in the latter way, the weight of the same object is focused at the tip where the area is much smaller than the base and thus you will feel a much greater "pressure" against the portion of your palm where the object's tip standing upon. From the example's illumination, you should have realized that: with the same weight(it's a kind of form of force), the pressure from the same object varies depending on which side(which

    determines the area size) being measured.

    Since simply the concept of "Force" itself can't describe or express the

    associated phenomena when the area is involved, the concept of "Pressure" was hence created.

    參考資料: 理工科出身
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