Inverse Square Relationship 1. The force of gravity on an astronaut is 600 N at the Earth’s surface. What is the force of gravity on him at each of the following distances from the center of the Earth, measured in MULTIPLES of the Earth’s radius? a. 2 b. 5 c. 10 d. 20 2. The force of gravity on a spacecraft some distance from the Earth is 800 N. What would that force be if its distance to the Earth’s center were: a. One-half as great? b. One-third as great? c. One-tenth as great? d. One-quarter as great? On the following problems, you will use the inverse square relationship to help quickly find out the desired values. 3. Suppose that two objects attract each other with a gravitational force of 20 N. If the distance between the two objects is halved, what is the new force of attraction between the two objects? 4. Suppose that two objects attract each other with a gravitational force of 20 N. If the distance between the two objects is doubled, then what is the new force of attraction between the two objects? 5. Suppose that two objects attract each other with a gravitational force of 20 N. If the mass of both objects was halved, and if the distance between the objects remained the same, then what would be the new force of attraction between the two objects? 6. Suppose that two objects attract each other with a gravitational force of 20 N. If the mass of both objects was doubled, and if the distance between the objects was doubled, then what would be the new force of attraction between the two objects? 7. Suppose that two objects attract each other with a gravitational force. If the mass of both objects was reduced by one-third, and if the distance between the objects was halved, then what would be the new force of attraction between the two objects? 8. Suppose that two objects attract each other with a gravitational force. If the mass of object 1 was tripled, and if the distance between the objects was quadrupled, then what would be the new force of attraction between the two objects?

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# 01b Inverse Square Relationship