{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 25 - Lecture 25 pls-25.1 Fluid Statics I Media 1 Cu...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 25 pls-25.1 Fluid Statics I Media: 1. Cu bar 2. Air pressure demos: (i) metal can, (ii) balloon in LN 2 (He then air), (iii) balloon in vacuum jar, (iv) balloon in “beaker”, (v) tank car video 3. Jar of water with three outlets 4. Shaving cream demo 1. Microscopic – Macroscopic Relationships —A theme throughout the rest of the course Example: Microscopic Macroscopic atomic mass density & atomic spacing 3 volume total mass total a m = ρ 2. Pressure Macroscopic picture : an object immersed in a fluid “feels” a force/unit area ( pressure) that is perpendicular to its surface at all points. This pressure wants to compress the object. m m a A F A F P = small, but macroscopic piece of surface
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Lecture 25 pls-25.2 Clicker question 1 . Microscopic picture : On average v r is perpendicular to surface Æ average force on molecules t m = v F r r is perpendicular to surface Æ (via N’s’ 3 rd law) average force on surface (from the molecules) t m = v F r r is also perpendicular to the surface.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}