00:01
Hi, here in this given problem this is an l -shaped water tank.
00:13
This is the total depth 3d.
00:18
Then here it is a depth of 2d up to here.
00:33
So this is twice of d.
00:36
This is d.
00:39
This depth is also d.
00:42
And the total one this is 3d the water has been filled in it up to the rim the value of this d this is 3 .71 meter in the first part of the problem we have to find total force at phase a and in the second part we will have to find total force at face b.
01:16
So for phase a its area will be area of face a square of side as in three dimensional figure it is clear that it is square shaped.
01:36
Now pressure, hydrostatic pressure at this level using pascal's law, the pressure, the pressure, the pressure, will be same everywhere so pressure at this level pa that will be equal to h into row into g and depth at this point that is 2d so that is 2d row g so force experienced by this for phase a that will be given by f a is equal to product of the pressure and area.
02:18
So this is 2d into row into g into d squared.
02:23
So finally it becomes twice of d cube into row into g...