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葡萄皮
[个人文集]
加入时间: 2004/02/14
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作者：葡萄皮 在 众议院 发贴, 来自 http://www.hjclub.org
If you are an ice skating champion, go down to the ice rink, and spin on the spot on the ice at a constant speed: then keeping the rest of your body still, tilt your head as flat as you can - this will change your angular velocity. (Cons. ang. mom., lalala).
Then: repeat the process, but this time lifting your left arm (from being vertically beside your body) up to the horizontal. This too will change your angular velocity.
From these three figures and a few simple anatomical measurements, you can then roughly deduce the ratio of the weight of your head to the weight of your left arm. Then it's simply a matter of cutting your arm off and weighing that to get an absolute figure.
Simple.
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nickpelling, Jun 05 2001
作者：葡萄皮 在 众议院 发贴, 来自 http://www.hjclub.org |
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