gc textbook chapter 11 Vibrations and Waves (id: db9bdd904)

本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 通用国际物理

[填空题]
A clock pendulum oscillates at a7 2/ vpow*ic. dd v r/)3eohjk.j)jfxa frequency of 2.5 Hz. At h+bv g8+qu(af it is released from rest starting at an u+q8(gfabhv+angle of 15 $^{\circ} $ to the vertical. Ignoring friction, what will be the position (angle) of the pendulum at
(a) t = 0.25 s ,    $^{\circ} $
(b) t = 1.60 s ,    $^{\circ} $
(c) t = 500 s ?    $^{\circ} $
[Hint: Do not confuse the angle of swing $\theta$ of the pendulum with the angle that appears as the argument of the cosine.]

参考答案:
空格1: -11±2%  空格2: 15±2%  空格3: 15±2% 


本题详细解析:

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