# Questions tagged [orbital-motion]

The path a body takes while moving through space under the influence of the gravitational forces of other bodies

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### Path Equation for Central Forces [closed]

I needed help in part (c) of this question. I have got the equation for $u=A\cos(wt)$ for some arbitary constants A and w but what interpretation can we make from there.
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### Do only gas planets have discs or even rocky planets may have them orbiting around?

Do only gas planets have discs or even rocky planets may have them orbiting around? If rocky planets are great in volume is then a higher chance for an orbiting disc to exist in the planetary orbit?
1 vote
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### Conditions for the Virial theorem

I've been investigating the Virial Theorem, and I've found different conditions, some more restrictive than others, for it to be applicable to a given system. According to my professor, said theorem ...
1 vote
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### Does the conservation of angular momentum depends upon the choice of point about which you are calculating it?

I know that torque is the rate of change of angular momentum. Suppose a planet is revolving around the sun. Then its angular momentum about the common center of mass of the planet and the sun will ...
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### Can kinetic energy be extracted from an object moving in vacuum using a gravitational slingshot?

Not really sure if physics question or engineering question. If we can apply energy to make an object in space move faster, the reverse should be possible - we should be able to extract energy while ...
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### Why, if the potential is different from the Coulomb one, but has spherical symmetry, the eigenvalues of the system are non-degenerate?

I have found the eigenvalues of the following systems: $H=-\frac{1}{2}\Delta+V_1$ and $H=-\frac{1}{2}\Delta+V_2$, using NDEigensystem by Wolfram Mathematica. In the ...
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### Is it possible to determine if a planet can have a moon based on its mass and gravitational pull?

I'm curious, if based on what we know with Newton's law, can we determine if a random planet, knowing it's mass and gravitational pull, can hold a moon in it's orbit. Or to phrase it another way, is ...
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### Number of Geostationary Orbits

It is stated that there is only one geostationary orbit whose height can be calculated using:- $H = [\frac{GM_ET^2}{4π^2}]^{\frac{1}{3}} - R$ But there can be more than one geostationary orbits if I ...
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### Why are the trajectories velocity specific? [duplicate]

Consider projecting a particle from or above the earth surface (at a distance $r$ from center of earth) with velocity $v$. My teacher told me that if $v<v_0$ particle will follow elliptical path, \$...
1 vote