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 2.29P
Interpretation Introduction

Interpretation:

The moment M required to hold the given cube in the position is to be determined.

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.

Moment of force (M) is the effect of the force applied at a particular distance from the axis of rotation on a rotational system which leads to its rotation. Mathematically it is written as:

  M=Fd ......... (2)

Here, d is the perpendicular distance from the axis at which the force is applied.

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