Fluid Flow

For steady flow:?

?m1/?t = ?m2/?t (conservation of mass)

density: ? = m/V, so m = ?*V

??*?V1/?t = ??*?V2/?t ,. where V = A*s

??*A1 *?s?1/?t = ??*A2* ?s2/?t , but v=?s/?t

so ??*A1 *v?1 = ??*A2* v2

(conservation of mass)

• example: squirting a hose

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