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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…
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Athletics
Circular motion is common to almost all sporting events. Whether it is sports car racing…
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Roller Coasters and Amusement Park Physics
People are wild about amusement parks. Each day, we flock by the millions to the…
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Newton’s Second Law – Revisited
Applications of Circular Motion Newton's second law states that the acceleration of an object is directly…
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Mathematics of Circular Motion
There are three mathematical quantities that will be of primary interest to us as we analyze the…
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The Forbidden F-Word
When the subject of circular motion is discussed, it is not uncommon to hear mention…
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The Centripetal Force Requirement
An object moving in a circle is experiencing an acceleration. Even if moving around the…