AH - Universal Gravitation LESSON
Universal Gravitation
From the Three Laws of Motion, Newton calculated the Universal Law of Gravity. The Universal Law of Gravity states that as two bodies move farther away from one another, the gravitational attraction between them decreases by the inverse of the square of the distance. This means that if the two objects are twice as far apart, the gravitational force is only a fourth as strong. The equation for universal gravitation is shown below:
| Symbol/Letter in Equation | Meaning | Measured In |
|---|---|---|
| F | Force between the two objects | Newtons (N) |
| G | Universal Gravitational Constant | Nm2/kg-2 |
| m1 | Mass of object 1 | Kilograms (kg) |
| m2 | Mass of object 2 | Kilograms (kg) |
| r2 | Distance from the center of mass of one object to the center of mass of the second object. | Meters (m) |
Your astronaut training continues with the presentation below. Make sure you take notes on the Gravitational Force presentation!
Review
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