| 1800
...the system, M. LA PLACE gives a method of estimating the alteration which the force vtve undergoes. **The principle of the conservation of the motion of the centre of gravity,** of areas, is demonstrated ; each of which subsists in the sudden change of the system :—next, the... | |
| Samuel Earnshaw - 1832 - 185 páginas
...surface gives xd,x-\-yd,y = —zd,z; CHAPTER VI. ON THE FREE MOTION OF SEVERAL UNCONNECTED PARTICLES. **The principle of the conservation of the motion of the centre of gravity.** 125. If any forces whatever act upon the unconnected particles of a system, their common centre of... | |
| John Henry Pratt - 1836 - 616 páginas
...situated when the forces begin to act. Wherefore the Proposition, as enunciated, is true. This Principle **is called The Principle of the Conservation of the Motion of the Centre of Gravity.** PROP. When a material system is in motion under the action of forces, whether of finite intensify or... | |
| ...of the extension which mechanics has received from the theory of gravity. The important mechanical **principle of the conservation of the motion of the centre of gravity,** is also due to Newton. He haa demonstrated, in his " Prinrijiia," that the state of the centre of gravity... | |
| John Henry Pratt - 1841 - 598 páginas
...collected in that point, and all the forces acted on it parallel to their real directions. Also, to deduce **the Principle of the Conservation of the motion of the Centre of Gravity.** 474. By the last Art. we have the three equations and the Prop, is proved exactly as in Art. 429, where... | |
| John Henry Pratt - 1842 - 620 páginas
...collected in that point, and all the forces acted on it parallel to their real directions. Also, to deduce **the Principle of the Conservation of the motion of the Centre of Gravity.** 474. By the last Art. we have the three equations and the Prop, is proved exactly as in Art. 429, where... | |
| Siméon-Denis Poisson - 1842
...will constantly preserve its initial velocity and direction ; hence this theorem has been denominated **the principle of the conservation of the motion of the centre of gravity.** This motion is not altered by the impact of bodies, whatever may be their degree of elasticity (No.... | |
| William Walton - 1842 - 451 páginas
...at any time after the projection, we have, by the Principle of the Conservation of Vis VlVa' and, by **the Principle of the Conservation of the Motion of the Centre of Gravity,** . • J-CT .................. (2). at From (1) and (2), we have but, from the geometry, we see that... | |
| Samuel Earnshaw - 1844 - 372 páginas
...employ the general Dynamical principles. Since there is no force upon the system in the direction Ox, **the principle of the conservation of the motion of the centre of gravity** holds good in that direction ; .-. (m + m) dtaa = MV ; ... mdtx + m'dtx' = MV (1), because (m + m)... | |
| William Parkinson Wilson, W[illiam] P[arkinson] Wilson - 1850 - 176 páginas
...are no external forces the center of gravity will move in a straight line with uniform velocity. This **is called the Principle of the Conservation of the motion of the** center of gravity. die We see from equations (III) that if 2X= 0, -7- is constant, whatever 2 Y and... | |
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