試題詳解

8. A meter stick is pivoted at a point a distance a from its center and swings as a physical pendulum. Of the following values for a, which results in the shortest period of oscillation?
(A) a = 0.5 m
(B) a = 0.3 m
(C) a = 0.2 m
(D) a = 0.1 m
(E) a = 0 m.