Recent content by vasilicus

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    Elliptical Orbit Question with no numbers

    Um, W = integral(xi-xf)(Fxdx)?
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    Elliptical Orbit Question with no numbers

    Well I know work is the change in Ug and the Gravitational Potential Energy of two particles separated by a distance r is -GMm/r Would e. just be GM/a? This seems to easy but then so did b. and c. And then for f if Work = Change Ug then would it be GMm/rf - GMm/ri GMm/a - 2GMm/(a+b) = Work?
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    Elliptical Orbit Question with no numbers

    Bump still stuck
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    Elliptical Orbit Question with no numbers

    for a. Ug = mgy g = Fg/m Fg = GMm/r2 therefore g = GM/r2 therefore Ug = GMmy/r2 y = r therefore Ug = GMM/r but U can't be positive so it's -GMm/r But how do you write the appropriate definite integral? For e. and f. Could you please elaborate, I looked again and tried to look up...
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    Elliptical Orbit Question with no numbers

    Please help somebody, the test is Tuesday and a similar problem will be worth 1/3rd of the points on the test and I still don't know how to do it...
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    Elliptical Orbit Question with no numbers

    Homework Statement A satellite of mass m is in an elliptical orbit around the Earth, which has mass M and radius R. The orbit varies from closest approach of 'a' at point A to maximum distance of 'b' from the center of Earth at point B. At point a the speed of the satellite is vo. Assume Ug...