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Grade 11Mechanics

there is a container having water level upto height of 3 m. there is straw dipped in water whose one open end is below the water surface and other end is open to atmosphere. find velocity of efflux. please give the reason also.Thank you.

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Profile image of Raj Shakya
7 Years agoGrade 11
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1 Answer

Profile image of Eshan
7 Years ago
Dear student,

Since the top end of straw is open, due to pressure of water at the bottom end, the water will rise back to height of 3m inside the straw too. Hence velocity of efflux isv=\sqrt{2gh}=\sqrt{2g(3)}