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  • Need explanation for: The top of a water tank is open to air and its water level is maintained . It is giving out 0.74m3 water per minute through a circular opening of 2cm radius in its wall. The depth of the centre of the opening from the level of water

The top of a water tank is open to air and its water level is maintained . It is giving out 0.74m3 water per minute through a circular opening of 2cm radius in its wall. The depth of the centre of the opening from the level of water in the tank is close to:

 

  • Option 1)

    9.6m

  • Option 2)

    6.0m

  • Option 3)

     

    2.9 m

  • Option 4)

    4.8m

Answers (1)

best_answer

 

Time to reach the Ground -

T=\sqrt{\frac{2(H-h)}{g}}

- wherein

\rightarrow    H - height of vessel 

\rightarrow    h - free surface to orifice

In flow volume = Out flow volume

\frac{0.74}{60}=\pi\times 4\times 10^{-4}\times \sqrt{2gh}

h=4.8m

 

 


Option 1)

9.6m

Option 2)

6.0m

Option 3)

 

2.9 m

Option 4)

4.8m
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