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Fluid Mechanics

Vorticity and Circulation

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The velocity of water at the outer edge of a 60 cm diameter whirlpool, where the water level is horizontal is 2.5 m/s. The velocity of water at a level where the diameter of the whirlpool is 15 cm, is

1 m/s

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5 m/s

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8 m/.s

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10 m/s

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Solution

The correct option is D 10 m/s
(d)
$V . r = c o n s tan t$

$2.5 \times 30 = V \times 7.5$

V = 10 m /sec

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The velocity of water at the outer edge of a 60 cm diameter whirlpool, where the water level is horizontal is 2.5 m/s. The velocity of water at a level where the diameter of the whirlpool is 15 cm, is

The correct option is D 10 m/s(d) V.r=constant 2.5×30=V×7.5 V = 10 m /sec

The correct option is D 10 m/s
(d)
$V . r = c o n s tan t$

$2.5 \times 30 = V \times 7.5$

V = 10 m /sec