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The weight of time

 

作者: Ian H. Redmount,   Richard H. Price,  

 

期刊: The Physics Teacher  （AIP Available online 1998）
卷期: Volume 36, issue 7  

页码: 432-434

 

ISSN:0031-921X

 

年代: 1998

 

DOI:10.1119/1.879900

 

出版商: American Association of Physics Teachers

 

关键词: hourglass;weight;impulse;center of mass;gravitation

 

数据来源: AIP

 

摘要:

The apparent weight of an hourglass is an excellent illustration of mechanics concepts. Impluse, momentum, center-of-mass motion, and gravitation all contribute. The average weight is unaltered, but tidal effects decrease the apparent weight while center-of-mass acceleration increases it.

 

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