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Central Force Solution 3
A Nexus mindmap
Planets move in elliptical orbits
with the Sun at one focus
0
1
2
0
The radius vector to a planet
sweeps out area at a constant rate
0
0
0
0
1
1
in short time
1
i.e. this is a consequence of the
conservation of angular montum
2
1
0
1
The square of the period is
proportional to the cube of the
semi-major axis
0
0
1
2
3
in one period
1
2
Keplers laws
0
0
0
0
0
1
2
1
0
0
0
1
2
3
Lagrangian
1
"reduced mass"
0
1
2
3
2
0
1
2
0
1
3
example
3
reduced mass
1
Central Force
Solution 3