# (III) In Fig. 10-54, take into account the speed of the

## Problem 48P Chapter 10

Physics: Principles with Applications | 6th Edition

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Problem 48P

(III) In Fig. 10-54, take into account the speed of the top surface of the tank and show that the speed of fluid leaving an opening near the bottom is

Where h = y2 -y1, and A1 and A2 are the areas of the opening and of the top surface, respectively. Assume A1 « A2 so that the flow remains nearly steady and laminar.

Step-by-Step Solution:

Solution 48P:

We have to derive the equation of the velocity of water from the opening at the bottom of the container. This velocity of water is also known as velocity of efflux.

Step 1 of 4</p>

Concept:

Continuity Principle: For the streamlined flow of water, the product of cross sectional area at any point to the velocity of water at that same point is always constant. Mathematically,

…(a)

Bernoulli’s Principle: The sum of the pressure energy, kinetic energy and potential energy for a streamlined system is always constant. Mathematically,

…(b)

Step 2 of 4</p>

Step 3 of 4

Step 4 of 4

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