# 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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### Can someone please explain this paragraph on work from the Feynman lectures?

This is a portion from Feynman Lectures: ...............We have proved previously that the answer is zero for any path composed of a series of notches like those of Fig. 13–3, and also that we do the ...
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### Circular motion problem - is this solution correct?

Recently in my physics class, my instructor introduced this problem, yet I have some doubts about how to answer the question, as I believe it is missing some information. I have thought about the ...
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### What additional velocity must be imparted to an orbiting satellite so that it leaves the earth's gravitational pull?

Consider this problem from my physics workbook: A spaceship is launched into a circular orbit close to the earth's surface. What additional velocity must now be imparted to the spaceship to overcome ...
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### Where does this formula come from? [closed]

I am doing revision for my module stellar & galactic astrophysics and have come upon this formula which I cannot seem to derive. Could someone please explain where it comes from? "For an ...
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### Can the Sun orbit the Earth?

You know how the earth orbits the sun because of gravity?...well if the sun were the right distance from the earth and it had the perfect tangential velocity...could it orbit the earth? In other words....
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### Elliptical orbits: Where have I made a mistake? [closed]

Sorry for not using latex, I am new. Assuming conservation of angular momentum and mechanical energy in an elliptical orbit, the sum of velocities at any two arbitrary points in orbit is constant? I ...
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### First Law of Motion, Gravitational acceleration and Law of Conservation of Energy [duplicate]

When an object leaves a celestial body (e.g. planet or star) with it's escape velocity, according to first law of motion, it will continue travel away from the body with the same speed (without having ...