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Measurement of Eccentricity of the Centre of Mass from the Geometric Centre of a Sphere |
| GUO Jun-Qi1;HU Zhong-Kun1;GU Bang-Ming2;LUO Jun1,2 |
| 1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077 |
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| Cite this article: |
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GUO Jun-Qi, HU Zhong-Kun, GU Bang-Ming et al 2004 Chin. Phys. Lett. 21 612-615 |
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Abstract The eccentricity of the centre of mass from the geometric centre of a spherical attracting mass in determining the Newtonian gravitational constant G is tested by means of an electronic balance. The experimental result shows that the eccentricity of the sample is about 0.31 μm with uncertainty of 0.05 μm. Two density distribution models are discussed to estimate the uncertainty to G by the eccentricities of the attracting masses.
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| Keywords:
06.20.Jr
04.80.Cc
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Published: 01 April 2004
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| PACS: |
06.20.Jr
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(Determination of fundamental constants)
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04.80.Cc
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(Experimental tests of gravitational theories)
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