試卷名稱:112年 - 112 台灣聯合大學系統_學士班轉學考試_A3/A6:普通物理#118471
年份:112年
科目:研究所、轉學考(插大)◆普通物理學
2. A pendulum of length L has its motion interrupted by a peg vertically beneath the support at a distance y below support, see Fig. 1. The bob is released when the string is horizontal.What is the minimum value of y for the bob to swing in a complete circle?
(A) L/2 ;
(B) 2L/3;
(C) 3L/4 ;
(D) 3LI5;
(E) None.