Universal Law of Gravitation

• Two equal masses M at a distance R act on each other with a gravitational attraction.

• If each mass is doubled, the force increases by (a factor of 2) (a factor of 4) (a factor of 1/2) (stays the same)

• If one mass is much larger than the other, the magnitude force on the larger mass is (the same) (larger) (smaller) than the force on the smaller mass

• If the two masses are free to move, they move toward each other. The acceleration of the larger mass is (the same) (larger) (smaller) than the that of the smaller mass

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