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Two spheres of mass $M$ and $4M$ are separated by a distance $d$. At what distance $x$ from the sphere of mass $M$ is the gravitational potential zero?
- A.$d/3$
- B.$d/4$
- C.$d/5$
- D.$2d/3$
Show correct answer & step-by-step solution
Correct answer: C — $d/5$
Solution
The potential . Solving this equation yields .
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