Fundamentals of Momentum, Heat, and Mass Transfer
Fundamentals of Momentum, Heat, and Mass Transfer
6th Edition
ISBN: 9781118947463
Author: James Welty, Gregory L. Rorrer, David G. Foster
Publisher: WILEY
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Chapter 2, Problem 2.25P
Interpretation Introduction

Interpretation:

The pressure force sufficient for the gates to keep them from opening is to be calculated.

Concept Introduction:

The force (F)

acting on a surface due to a fluid above it is defined as:

  F=ρgzA ...... (1)

Here, ρ is the density of the fluid with height z , A is the area of the surface, and g is the acceleration due to gravity.

The location of the force (η) is calculated as:

  η=z+IAz ...... (2)

Here, I is the moment of the area at its centroid.

The force that leads any object to float when immersed partially or fully in a fluid is known as buoyancy or buoyant force. It is the result of the pressure differences that acts on the opposite sides of that object when immersed in the fluid which is static.

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