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An accurate determination of the acceleration of gravity for lecture hall demonstration

 

作者: Wolfgang Rueckner,   Paul Titcomb,  

 

期刊: American Journal of Physics  （AIP Available online 1987）
卷期: Volume 55, issue 4  

页码: 324-330

 

ISSN:0002-9505

 

年代: 1987

 

DOI:10.1119/1.15200

 

出版商: American Association of Physics Teachers

 

关键词: BENCH−SCALE EXPERIMENTS;ACCELERATION;GRAVITATION;SPHERES;ACCURACY;MEASURING METHODS;DRAG

 

数据来源: AIP

 

摘要:

A new suspension/release mechanism for a free‐fall experiment is described. Its design makes it possible to measure time intervals to ±10 μs in free‐fall‐from‐rest experiments. With an overall accuracy of ±0.022%, the different accelerations (in air) of various falling bodies can be determined. Agreement with theory is shown to be very good for the case of spheres. Questions concerning the appropriate drag coefficients applicable are discussed.

 

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