Basic Orbits and Newton's cannon.

Posted on 2011-05-02
Last Modified: 2012-05-11
If all you know is the initial velocity and the height of a mountain, how do you figure out the semi-major axis and eccentricity for newton's cannon thought experiment?  

Question by:tmonteit
    LVL 31

    Assisted Solution

    See Binary Circular Orbit and then axis:

    Here is another link that may be useful:
    LVL 84

    Accepted Solution

    You can derive it from Kepler's 2nd and 3rd laws and the vis viva equation.

    Author Comment

    I'm very amature at this, what is the derivation?
    LVL 30

    Assisted Solution

    by:Paul Sauvé
    Perhaps this presentation will be of some use to you: Celestial Mechanics - Dr. Brian Rachford !

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