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Grade 11Mechanics

In a U-tube, diameter of two limbs are 0.5 cm and 1 cm respectively. And the tube is filled with water (T= 72 dyne/ cm) then the liquid level difference between the 2 limbs will be

Nivedita

7 Years agoGrade 11

1 Answer

Khimraj

7 Years ago

density of water = = 1000 kg/m³

radius of limbs , r1 = 0 · 1 cm = 1 × 10^-3 m and r2 = 0 · 5 cm = 5 × 10^-3m

surface tension , T = 0 · 07 N/m

Now difference in level of water in two tubes ,

$h1 - h2 = \frac{2T}{g} (\frac{1}{r_{1}} - \frac{1}{r_{2}})$

= 0.01 m

Hope it clears.........................

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