First slide

Fluid dynamics

Question

Water is flowing with velocity 4 m/s in a cylinder of diameter 8 cm. It is connected to a pipe with its end tip of diameter 2 cm. The velocity of water at this free end is

Easy

A

4 m/s
B

8 m/s
C

32 m/s
D

64 m/s

Solution

By using $A_{1} v_{1} = A_{2} v_{2} we have v_{2} = 16 v_{1} = 64 m / s .$

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