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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
5 Nov 2021

Given information

the shape of tha water tank is given as:

Step-by-step explanation

Step 1.

At a depth h from the top of the tank (not spout), its height with respect to the bottom is 3-h and the width w of the tank at any level is proportional to the height at that level. 

So, find the width w at any depth h, by equating the ratio of widths and heights.

 

Now,evaluate the mass of an infinitesimally thin layer of water of thickness dh and at a depth h from the top of the tank.

 

 

 

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