Is it possible for a system to have negative potential energy? A. Yes, as long a

Question

Is it possible for a system to have negative potential energy?
A. Yes, as long as the total energy is positive
B. Yes, since the choice of the zero of potential energy is arbitray
C. Yes, but only at infinity
D. No, because the kinetic energy of a sytem must equal its potential enery
E. No, because this would have no physical meaning

The answer is B. But can you "apply the law, definition, or concept to explain why the correct selection is the correct answer for the question"? I just need some elaboration

Explanation / Answer

Option B is correct

Yes. Potential energy can't be specified in absolute terms; you have to arbitrarily define a reference point. For the case of gravitation, any object below the reference point would have negative potential energy. What matters is not the number assigned to the potential energy, but the difference - this difference would be the same, even if you change your reference level.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.