gc physics textbook chapter 6 problems (id: 2addff132)

本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学

[问答题]
Analyze the motion of a simple swinging pendulum in tez )6wj-hhz*y c: :3sfz 6cyrcprms of energy, (a) ignoring friction, andp:scz3:f c r6y (b) taking friction into account. Explain why a grandfather clock has to be wound up.

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