Mechanics Of Materials - 8 Edition - Chapter 9.4 - Problem F9-10
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# Determine the principal stress developed at point A on the cross section of the beam at

Mechanics of Materials | 8th Edition

Problem F9-10

Determine the principal stress developed at point A on the cross section of the beam at section aa.

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Dimensions and Formula Conversions: Dimensions are used to describe physical quantities; however, the most important concept to remember is that dimensions are independent of units. This is the actual definition of dimensions. Now to explain it simply, it is the quantity that can be used regardless of the unit. Suppose: For length, its dimension is [L]. No matter what the unit is, it can be meter, feet, yards and many more. But the dimension will always be [L]. Similarly, for mass, it is [M] even though the unit can be anything like kg/slug/lb. Units vs Dimensions Physical Units Dimension Quantity Length m, cm, in, ft, miles, [L]

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