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A fire hydrant delivers water of density...

A fire hydrant delivers water of density `rho` at a volume are `L`. The water travels vertically upward through the hydrant and then does `90^(@)` turn to emerge horizontally at speed `V`. The pipe and nozzle have uniform cross-section through out. The force exerted by the water on the corner of the hydrant is

A

`rhoVL`

B

zero

C

`2rhoVL`

D

`sqrt(2)rhoVL`

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • A fire hydrant delivers water of density rho at a volume are L . The water travels vertically upward through the hydrant and then does 90^(@) turn to emerge horizontally at speed V . The pipe and nozzel have uniform corss-section throught out. The force exerted by the water on the corner of the hydrant is

    A
    `rho V L`
    B
    zero
    C
    `2 rho VL`
    D
    `sqrt(2)rho VL`

  • Water is flowing through a horizontal pipe of non-uniform cross- section. At the extreme narrow portion of the pipe, the water will have

    A
    Maximum speed and least pressure
    B
    Maximum pressure and least speed
    C
    Both pressure and speed maximum
    D
    Both pressure special least

  • A horizontal pipe of cross-section diameter 5cm carries water at a speed of 4ms^(-1) . The pipe is connected to a smaller pipe with a cross-sectional diameter 4cm. The velocity of water through the smaller pipe is

    A
    `6.25 ms^(-1)`
    B
    `5.0 ms^(-1)`
    C
    `3.2 ms^(-1)`
    D
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