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Textbook ExpertVerified Tutor
5 Nov 2021

Given information

the shape of the water tank is given as follows:

Step-by-step explanation

Step 1.

The hydrostatic pressure of a water of density  at a depth d from the surface of the water is .

The force on a surface due to pressure   exerted is   , where   is the area of the surface being considered.

 If the depth increases by 5 m, the width increases by 4m. So, at any depth h from the surface of water, the width of the plate is given by .  

So, the area   of a thin horizontal strip of the plate of thickness dh at this depth h is  

 

 

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