it concerns the outflow of water from a cylindrical tank with a hole at the bottom you are asked to find the height of the water in the tank at any time if the tank has a diameter 2M, the hole has diameter 1CM and the initial height of the water when the hole is opened is 2.25M, when will the tank be empty???????

Question

ganpat · Answer

Volume of water = pi * r2 * h = 28.274 meter cube 

Let x be amount of time taken to empty a tank, 
so per minute = 1/x

Amount of water out, Q = pi / 4 * d2  * sq rt 2gh = 
= 3.14 /4 * 1/100 sq * sq (2 * 9.81 * 2.25)
= 5.21 * (1/100) square..  this is per minute.. 

so total time = 28.274 * 100 * 100 / 5.21 =

ganpat · Answer

m not sure man.. just a try, also recheck on calculations..

anonymous · Answer

it's gd i'll check the answer

ganpat · Answer

= 5.21 * (1/100) square..  this is per minute.. 

This should be per sec.. FLow is mostly meter cube / sec...

So whatever answers come divide by 60.. to get into minutes..

anonymous · Answer

thx ganpat