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Energy Relationships for Satellites
The orbits of satellites about a central massive body can be described as either circular…
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Weightlessness in Orbit
Astronauts who are orbiting the Earth often experience sensations of weightlessness. These sensations experienced by…
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Mathematics of Satellite Motion
The motion of objects is governed by Newton's laws. The same simple laws that govern…
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Circular Motion Principles for Satellites
A satellite is any object that is orbiting the earth, sun or other massive body.…
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Kepler’s Three Laws
Planetary and Satellite Motion In the early 1600s, Johannes Kepler proposed three laws of planetary…
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The Value of g
In the previous topic, an equation was given for determining the force of gravity (Fgrav) with which…
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Cavendish and the Value of G
Isaac Newton's law of universal gravitation proposed that the gravitational attraction between any two objects…
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Newton’s Law of Universal Gravitation
Isaac Newton compared the acceleration of the moon to the acceleration of objects on earth.…
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The Apple, the Moon, and the Inverse Square Law
In the early 1600's, German mathematician and astronomer Johannes Kepler mathematically analyzed known astronomical data in order…
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Gravity is More Than a Name
Universal Gravitation Nearly every child knows of the word gravity. Gravity is the name associated with…