Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Simple Pendulum Determination of the Gravitational Constant   We determined the Newtonian Constant of Gravitation G by interferometrically
measuring the change in spacing between two free-hanging pendulum masses caused
by the gravitational field from large tungsten source masses. We find a value
for G of (6.672 34 +/- 0.000 14) x 10^-11 m^3 kg^-1 s^-2. This value is in good
agreement with the 1986 Committee on Data for Science and Technology (CODATA)
value of (6.672 59 +/- 0.000 85) x 10^-11 m^3 kg^-1 s^-2 [Rev. Mod. Phys. 59,
1121 (1987)] but differs from some more recent determinations as well as the
latest CODATA recommendation of (6.674 28 +/- 0.000 67) x 10^-11 m^3 kg^-1 s^-2
[Rev. Mod. Phys. 80, 633 (2008)].

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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
1
The categories of this paper are: cs
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The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
2
The categories of this paper are: math
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The categories of this paper are: atom-ph