NDA 2018 Physics question

A ball balanced on a vertical rod is an example of

(A)stable equilibrium
(B)unstable equilibriumCorrect
(C)neutral equilibrium
(D)perfect equilibrium

Answer: (B)

Solution

A ball balanced on top of a rod has its centre of gravity at the highest possible position; the slightest push lowers the centre of gravity and the ball falls off

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Question ID VK-031022