Water tank has a hole in its wall at a distance of 10 m below the free surface of water. The diameter of the hole is 2 mm. Compute the velocity of efflux of water from the hole and the rate of flow of water.
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Correct Answer is: (1) 4.4 × 10–5 m3/sec The velocity of efflux of water is
v = √(2 g ) = √(2 x 9.8 m / s2 x 10m) = 14 m/s
The rate of flow of water is
= A × v = πr2 × v =
3.14 × (1×10–3 m)2 × 14 m/sec
= 4.4 × 10–5 m3/se
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