| Jeremiah Day - 1851 - عدد الصفحات: 418
...45°=-=. For V2 R2=l-=sm2 45°+cos2 45=-2sin2 45° Therefore, Sin 45°= V£ =~-^. 97. The chord of an^ arc is a mean proportional, between the diameter of the circle, and the versed sine of the arc. Let ADB, (Fig. 6.) be an arc, of which AB is the chord, BF the sine, and AF... | |
| Oliver Byrne - 1863 - عدد الصفحات: 600
...a circle by means of a given centripetal force, the portion of the circumference which it describes in any time is a mean proportional between the diameter of the circle and the space which the body would descend perpendicularly in the same time, and with the same given force... | |
| William Templeton - 1865 - عدد الصفحات: 178
...circle by means of a given centripetal force, the portion of the circumference wfiich it describes in any time is a mean proportional between the diameter of the circle and the space which the body would descend perpendicularly in the same time, and with the same given force... | |
| Isaac Newton - 1900 - عدد الصفحات: 320
...body, moving with uniform velocity ina circle under the action of a given centripetal force, describes in any time, is a mean proportional between the diameter of the circle, and the space through which the body would fall from rest under the action of the same force and in the same... | |
| 1901 - عدد الصفحات: 548
...the circumference is, therefore, 4/15' — 12*, or 4/8T, or 9 inches. Then, the chord of half the arc is a mean proportional between the diameter of the circle and the 9 inches, the height of the segment. Hence, the diameter is equal to -„-, or 25 in. Ans. (2) By Art.... | |
| Michael R. Matthews, Colin F. Gauld, Arthur Stinner - 2005 - عدد الصفحات: 574
...IX of Book I. Corollary IX of Proposition IV, Book I states: From the same demonstration it likewise follows, that the arc which a body, uniformly revolving in a circle with a given centripetal force, describes in any time, is a mean proportional between the diameter... | |
| University of Cambridge - 1814 - عدد الصفحات: 340
...arc of a circle which a body, acted ujjflft by a centripetal force, uniformly describes in anygiven time is a mean proportional between the diameter of the circle, and the space described by a heavy body from rest in the same time when urged by the force in the circumference... | |
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