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Factors Affecting Pressure

Two U-tube ma...

Question

Two U-tube manometers are connected to a same tube as shown in figure. Determine difference of pressure between $X$ and $Y$ . Take specific gravity of mercury as $13.6 (g = 10 m / s^{2}, ρ_{H g} = 13600 k g / m^{3})$ .

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Solution

Given, specific gravity of mercury $= 13.6$
$g = 10 m / s^{2}$
$ρ_{H g} = 13600 k g / m^{3} P = h ρ g = 25 \times 10^{- 2} \times 13.6 \times 10 = 34 P a$

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