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Printable version; Page information; Get shortened URL ... Diagram illustrating Newton's derivation of his theorem of revolving orbits. Date: 23 August 2008: Source:
[2] [3] If the orbit rotates at an angular speed Ω, the angular speed of the second particle is faster or slower than that of the first particle by Ω; in other words, the angular speeds would satisfy the equation ω 2 = ω 1 + Ω. However, Newton's theorem of revolving orbits states that the angular speeds are related by multiplication: ω 2 ...
The inverse-cube force is chosen to change the 2nd (blue), 3rd (green) and 6th (red) harmonics of the base ellipse (shown in black). The eccentricity is 0.8, as in Newton revolving orbits 1 inv2 inv3.png and Newton revolving orbits 1 0.95.png.
English: Schematic illustrating Newton's theorem of revolving orbits. Meant to be coupled with Image:Newton revolving orbit 3rd subharmonic e0.6 240frames smaller.gif. The smaller angle θ here is 20 degrees, whereas the larger angle kθ equals 60 degrees; hence, k equals 3.
At the top of the diagram, a satellite in a clockwise circular orbit (yellow spot) launches objects of negligible mass: (1 - blue) towards Earth, (2 - red) away from Earth, (3 - grey) in the direction of travel, and (4 - black) backwards in the direction of travel. Dashed ellipses are orbits relative to Earth.
Print/export Download as PDF; Printable version; In other projects ... Newton's theorem of revolving orbits; Newton's shell theorem This page was last edited on ...
General relativity is a more exact theory than Newton's laws for calculating orbits, and it is sometimes necessary to use it for greater accuracy or in high-gravity situations (e.g. orbits near the Sun).
As the planets have small masses compared to that of the Sun, the orbits conform approximately to Kepler's laws. Newton's model improves upon Kepler's model, and fits actual observations more accurately. (See two-body problem.) Below comes the detailed calculation of the acceleration of a planet moving according to Kepler's first and second laws.
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