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Question 30462
JEE Physics · Hard

Work, Power and Energy: JEE — PE Curve MCQ

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JEE — PE CurveHardQuestion 30462

Question

A particle at the top of a PE energy hill (local maximum in U-x curve) is in:
  1. A
    Stable equilibrium
  2. B
    Unstable equilibrium
    Correct
  3. C
    Neutral equilibrium
  4. D
    No equilibrium

Correct answer

Unstable equilibrium

Explanation

At a PE maximum: F = −dU/dx = 0 (equilibrium). A small displacement gives a force pushing the particle further away → unstable equilibrium.

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