Types of Equilibrium — JEE Main Physics MCQs with Solutions
Free JEE Main Physics Types of Equilibrium MCQs with step-by-step solutions (2 questions). Part of Work, Power and Energy. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Types of Equilibrium · easy · numerical
For U(x) = 5 + (x − 1)² (J), the stable equilibrium is at:
A. x = 1 m ✓ Correct
B. x = −1 m
C. x = 5 m
D. x = 0
Solution: U is a parabola with minimum at x = 1 (U = 5 J there); F = −2(x−1) is restoring about it.
Q2 — Types of Equilibrium · medium · theory
A cylinder lying on its curved side on a horizontal table is in ______ equilibrium:
A. Unstable
B. Neutral ✓ Correct
C. Stable
D. No equilibrium
Solution: Rolling it sideways neither raises nor lowers its centre of gravity ⇒ U constant ⇒ neutral. (On its flat end: stable; balanced on an edge: unstable.)