Question

A water pipe entering a hose has a diameter of 2cm and speed of water is 0.1m/s. Eventually the pipe tapers to a diameter of 1cm. calculate the speed of water in the tapered portion

Answer 1

Answer:

From Continuity equation: A

1

V

1

=A

2

V

2

⇒π(1)

2

×1=4×πr

2

⇒

4

1

=r

2

⇒r=

2

1

cm

So, Diameter of the nozzle =

2

1

×2 cm=1 cm

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Answer 2

Answer:

Final radius = d/2 = 1/2 = 0.5 cm