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13 Cards in this Set
- Front
- Back
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Newton's Law of Universal Gravitation |
The force of gravity between any two point objects of mass m1 and m2 is attractive and of magnitude.
r is the distance between the masses and G is a constant referred to as the universal gravitation constant. Its value is 6.67 x 10^-11 N x m^2/kg^2 |
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Principle of Superposition |
The net force of several different gravitational forces acting on an object. |
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Gravitational Attraction of Spherical Bodies |
The force is the same as if all the mass of the sphere were concentrated at its center. |
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Keplar's Laws of Orbital Motion |
1. Planets follow elliptical orbits, with the Sun at one focus of the ellipse.
2. As a planet moves in its orbit, it sweeps out an equal amount of area in an equal amount of time.
3. The period, T, of a planet increases as its mean distance from the Sun, r, raised to the 3/2 power. |
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Gravitational Potential Energy |
U is a scalar, and goes to zero as the mass become infinitely apart. |
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Energy Conservation |
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Black Hole |
An object that is sufficiently massive and sufficiently small that the escape speed is equal or exceeding the speed of light. |
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Tidal Force |
The difference in gravitational force across an object due to its size. |
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Acceleration of Gravity |
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Mass of the Earth |
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Orbital Period |
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Escape Speed |
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Total Mechanical Energy |
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