本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified
[问答题]
We claim that momentum0v6rb i5:aw9y fdy9cf an1k;;(aolu 1l y6 dwhjed angular momentum are conserved. Yet most moving or rotating objects eventually slow1;61j hwya( o ekl;udl down and stop. Explain.
参考答案:
Momentum
and angular momentum are conserved for closed systems – systems in which there
are no external forces or torques applied to the system. Probably no macroscopic systems on Earth are
truly closed, and so external forces and torques (like those applied by air
friction, for example) affect the systems over time.
本题详细解析:
暂无
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Post time 2025-2-18 20:00:22