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Item RG042003: The gravitational potential energy of a system of two objects can be increased by pulling them farther apart.

Which of the following statements about the gravitational potential energy of a system of two objects is true?

  1. The gravitational potential energy of a system of two objects can be increased by pulling them farther apart.
  2. The gravitational potential energy of a system of two objects can be increased by bringing them closer together.
  3. The gravitational potential energy of a system of two objects can only be changed if one of the objects in the system is the earth.
  4. The gravitational potential energy of a system of two objects can only be changed if the mass of the one of the objects changes.
Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 3008
4–5
n = 0
6–8
n = 1495
9–12
n = 1513
Male
n = 1390
Female
n = 1534
English
n = 2685
Other
n = 228
A. The gravitational potential energy of a system of two objects can be increased by pulling them farther apart. 22%N/A 22% 23% 22% 23% 22% 22%
B. The gravitational potential energy of a system of two objects can be increased by bringing them closer together. 28%N/A 29% 27% 30% 26% 28% 29%
C. The gravitational potential energy of a system of two objects can only be changed if one of the objects in the system is the earth. 21%N/A 22% 20% 20% 21% 21% 20%
D. The gravitational potential energy of a system of two objects can only be changed if the mass of the one of the objects changes. 29%N/A 28% 30% 28% 30% 29% 29%