The gravitational potential energy of a two-particle system separated by r (taking U → 0 as r → ∞) is:
A+ G m1 m2 / r
B− G m1 m2 / r
C− G m1 m2 / r²
D+ G m1 m2 r
Answer & Solution
Correct answer: B. − G m1 m2 / r
U = − G m1 m2 / r.
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