Gravitational Potential Energy: Three masses are located as follows: a 3.5-kg mass is at the origin, a 4.2-kg mass at (0.0 m, 7.0 m), and a 6.5-kg mass at (24.0 m, 0.0 m). What is the gravitational potential energy of this system of masses? (G = 6.67 × 10-11 N ? m2/kg2)
A. -2.8 × 10-10 J
B. -2.0 × 10-10 J
C. -1.4 × 10-10 J
D. -3.2 × 10-10 J
E. -3.9 × 10-10 J
Answer: A
Physics & Space Science
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