JAMB Physics 2011 Objective — Question 7

Question 7 of 49 from the Joint Admissions and Matriculation Board (JAMB) Physics 2011 Objective paper, with the correct answer and a full explanation.

[Diagrams: three cone positions X, Y, Z] The diagrams above show the positions of a cone. The position which can be described as neutral equilibrium is represented as

A. A. Y and Z
B. B. Y and X
C. C. Z onlyCorrect
D. D. X only

Explanation

X represents unstable equilibrium (cone balanced on its point), Y represents stable equilibrium (cone resting on its base), and Z represents neutral equilibrium (cone lying on its side).

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