Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Natural configurations and normal frequencies of a vertically suspended,
  spinning, loaded chain with both extremities pinned   The resonant configurations and normal frequencies of a loaded hanging chain
that is rotating uniformly about the vertical are examined for theoretical and
experimental perspectives. The chain is assumed pinned at both ends, with an
extra load added to the lower end for stability. The equation of motion for
this system is solved and it is shown that the various resonant configurations
of the chain are described by Bessel functions of order zero. The normal
frequencies are obtained and the predictions of the model are compared to
experiment. Time-exposure photographs are presented to illustrate the shape of
the various normal modes.

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The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: stat
7
The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph