Transcript
![Page 1: Force System Resultants Moment of a Force Scalar FormulationResultant Couple Moment. Since couple moments are vectors, their resultant can be determined by vector addition. For example,](https://reader036.vdocuments.site/reader036/viewer/2022081502/5e3a5e0f5c6e767daa5374a3/html5/thumbnails/1.jpg)
Force System Resultants
Moment of a Force Scalar Formulation :
Lecture 5
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If the numerical result of this sum is a positive scalar , (MR)O will be a
counterclockwise moment , and if the result is negative , (MR)O will be a
clockwise moment .
Examples :
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Solution :
Principle of Moments :
It states that the moment of a force about a point is equal to the sum of
the moments
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Example :
Solution I :
Solution II :
Example :
Determine the moment of the force as shown in figure about point O .
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Moment of a Couple :
Solution :
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Example :
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Solution :
Example :
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Solution :