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" ... be necessary to include among the forces the resistances exercised by the curves or surfaces. As a corollary, we may deduce from the above proposition, that the motion of the centre of gravity of a system of bodies will be uniform and rectilineal,... "
Outlines of Natural Philosophy: Being the Heads of a Course of Lectures ... - الصفحة 90
بواسطة James Renwick - 1822
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Elementary Illustrations of the Celestial Mechanics of Laplace: Part the ...

Pierre Simon marquis de Laplace, Thomas Young - 1821 - عدد الصفحات: 402
...constant, and the motion is uniform. SCHOLIUM. It is obvious from this analysis that the invariability of the motion of the centre of gravity of a system of bodies, whatever their mutual actions may be, holds good even in the case of an instantaneous loss of a finite...

The Literary and Scientific Repository, and Critical Review, المجلد 4

1822 - عدد الصفحات: 524
...fixed, are compelled to move upon given curves or surfaces, the same law will still apply ; but it \vill be necessary to include among the forces the resistances...other. This will be true, whether the mutual action be produced by an attractive or a repulsive force, or by actual collision. See § 216. If a number...

The Literary and Scientific Repository, and Critical Review, المجلد 4

1822 - عدد الصفحات: 520
...although not absolutely fixed, are compelled to move upon given curves or surfaces, the same law will still apply ; but it will be necessary to include...action of the several bodies upon each other. This \vill be true, whether the mutual action be produced by an attractive or a repulsive force, or by actual...

Mechanism of the Heavens

Mary Somerville - 1831 - عدد الصفحات: 710
...another, in the shortest time possible : which is the principle of least action in a system of bodies. On the Motion of the Centre of Gravity of a System of Bodies. 151. In a system of bodies the common centre of gravity of the whole either remains at rest or moves...

The Elements of Mechanics, Comprehending Statics and Dynamics: With a ...

John Radford Young - 1832 - عدد الصفحات: 390
...system must describe a straight line, and its velocity at any time will be which, being constant, shows that the motion of the centre of gravity of a system of bodies, whose motions are entirely due to their mutual influences, is both rectilinear and uniform. This is...

Dynamics: Or, A Treatise on Motion; to which is Added a Short Treatise on ...

Samuel Earnshaw - 1844 - عدد الصفحات: 426
...and the square of (l) added to the square of (3) will give a' ; a similar process will give b'. ON THE MOTION OF THE CENTRE OF GRAVITY OF A SYSTEM OF BODIES. 49. PROB. Given the masses of several bodies, which move uniformly in straight lines, and the velocities...

Elements of Mechanical Philosophy: For the Use of the Junior Students of the ...

William Barton Rogers - 1852 - عدد الصفحات: 358
...its centre of gravity is 200 feet. The area of the dome will be 30 X 200 = 6000 square feet. 223. Of the motion of the centre of gravity of a system of bodies. The general principle which governs the motion of this point is as follows: If forces Pl P2 and P3...

A Mechanical Text-book: Or, Introduction to the Study of Mechanics and ...

William John Macquorn Rankine, Edward Fisher Bamber - 1873 - عدد الصفحات: 368
...resultant momentum of the system. 340. Motion of Centre of Gravity. — COROLLARY. The variations of the motion of the centre of gravity of a system of bodies are wholly produced by forces exerted by bodies external to the system; for the motion of the centre...

A Mechanical Text-book: Or, Introduction to the Study of Mechanics and ...

William John Macquorn Rankine, Edward Fisher Bamber - 1873 - عدد الصفحات: 372
...resultant momentum of the system. 340. Motion of Centre of Gravity.— COROLLARY. The variations of the motion of the centre of gravity of a system of bodies are wholly produced by forces exerted by bodies external to the system; for the motion of the centre...

Classical Mechanics

Peter Ryder - 2007 - عدد الصفحات: 277
...the conservation of momentum, the vector addition of forces (parallelogram of forces) and the fact that the motion of the centre of gravity of a system of particles is not affected by internal forces. Appendix D Internet Resources and Books Internet Resources...
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