 ... substituted in (a), gives y*=4hx, (62) the equation of a parabola referred to the oblique axes AX, AY ; and, since 4A is the parameter to the diameter through A, h is the distance from A, the point of projection to the focus F, or to the directrix....  A Treatise on Dynamics - Сторінка 53автори: William Parkinson Wilson - 1801 - 176 стор.Повний перегляд - Докладніше про цю книгу
 | Augustus William Smith - 1855 - 340 стор.
...of projection to the focus F, or to the directrix. COR. The velocity of the body at any point of its path is that which the body would acquire in falling vertically from the directrix to that point. For if the body were projected from any point of its path in the direction, and with the velocity it... | |
 | Augustus William Smith - 1855 - 368 стор.
...of projection to the focus F, or to the directrix. COR. The velocity of the body at any point of its path is that which the body would acquire in falling vertically from the directrix to that point. For if the body were projected from any point of its path in the direction, and with the velocity it... | |
 | Augustus William Smith - 1863 - 340 стор.
...of projection to the focus F, or to the directrix. COR. The velocity of the body at any point of its path is that which the body would acquire in falling vertically from the directrix to that point. For if the body were projected from any point of its path in the direction, and with the velocity it... | |
 | Benjamin Williamson, Francis Alexander Tarleton - 1885 - 486 стор.
...towards the centre of force (compare Art 128). Again, if F = -^, we have If V - 0, when R = <x> , ie if the velocity at any point in the path is that which the body would acquire in moving from rest from an infinitely great distance towards the centre of force, we have (17) _ . n... | |
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