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試卷名稱：114年 - 114 國立清華大學學士後醫學系單獨招生考試_學士後醫學系/智慧資訊科技組：資訊科學#135660
年份：114年
科目：學士後西醫◆資訊科學
3. A pendulum is composed of a bob of mass m2, a rigid string of length 
and negligible mass, and a mass m₁ at the point of support, as shown in the figure. The mass m₁ can only move horizontally in the x-direction on a frictionless track, while m2 swings in the xy plane. The system is placed in a uniform gravitational field 
=
. What is the period of the oscillation when m2 is released at a small angle?
(A) 
(B) 
(C) 
(D) 
(E) 