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" ... directions of the forces sensibly parallel : whence we must conclude, that the line of direction of the resultant of two parallel forces is in the plane of the forces, is parallel to the direction of the forces, and that the moment of the resultant,... "
An Elementary Treatise on Mechanics - الصفحة 48
بواسطة Isaac Wilber Jackson - 1854 - عدد الصفحات: 197
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A treatise of mechanics, tr., and elucidated with notes, by H.H. Harte, المجلد 1

Siméon Denis Poisson - 1842 - عدد الصفحات: 706
...the theorem which which has been now demonstrated implies, that the moment of the resultant of the two forces is equal to the sum or difference of the moments of these two forces, according as the components tend to make their points of application turn in the...

An Elementary Treatise on Mechanics: Intended for the Use of Colleges and ...

William Whewell - 1847 - عدد الصفحات: 208
...different planes. 60. PROP. The moment of the resultant of two forces acting in one plane about any point is equal to the sum or difference of the moments of the components ; according as the forces tend to turn the system the same or different ways. Let AP, AQ...

Elements of Natural Philosophy, المجلد 1

William Holms Chambers Bartlett - 1850 - عدد الصفحات: 662
...the forces, and that the moment of the resultant, taken in reference to any point in the plane of the forces, is equal to the sum or difference of the moments of the components, according as they tend to turn the system in the same or opposite directions about the...

Elements of Natural Philosophy, المجلد 2

William Holms Chambers Bartlett - 1850 - عدد الصفحات: 640
...the forces, and that the moment of the resultant, taken in reference to any point in the plane of the forces, is equal to the sum or difference of the moments of the components, according as they tend to turn the system in the same or opposite directions about the...

An Elementary Treatise on Statics: With a Biographical Notice of the Author

Gaspard Monge - 1851 - عدد الصفحات: 228
...of the resultant K of these forces referred to any point D, taken in the plane of these directions, is equal to the sum or difference of the moments of the forces P, Q, referred to the same point, according as the point D is without or within the angle PAQ, formed...

An Elementary Treatise on Mechanics ...

Isaac Wilber Jackson - 1852 - عدد الصفحات: 202
...component which has the greater moment, We may therefore say that the moment of the resultant of any t^vo forces is equal to the sum or difference of the moments of the forces., according as the forces tend to turn their points of application in the same sense, or in opposite senses, about the...

Five Years in an English University, المجلد 2

Charles Astor Bristed - 1852 - عدد الصفحات: 470
...forces act upon a point, the moment of their resultant about any point in the plane of their action is equal to the sum or difference of the moments of the two forces. 4. A lever acted on by any two forces will be kept in equilibrium about a fulcrum, when...

Elements of Natural Philosophy: I. Mechanics

William Holms Chambers Bartlett - 1855 - عدد الصفحات: 646
...the forces, and that the moment of the resultant, taken in reference to any point in the plane of the forces, is equal to the sum or difference of the moments of the components, according as they tend to turn the system in the same or opposite directions about the...

Dublin examination papers

Dublin city, univ - 1878 - عدد الصفحات: 498
...diagonal. 2. Prove that the moment of the resultant of two forces with regard to any point in their plane is equal to the sum or difference of the moments of the components, and show how to distinguish the two cases. 3. If there be a system of parallel lines, determine...

Theoretical Mechanics: An Elementary Treatise

William Woolsey Johnson - 1901 - عدد الصفحات: 484
...shortest distance between them. 220. The combined turning effect of two forces about a given axis is the sum or difference of the moments of the forces according as they tend to turn the body in the same or in opposite directions. In like manner, adopting one direction...




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