Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Accelerometer Based Instrumentation of the Golf Club: Measurement and
  Signal Analysis   Two accelerometers are used to measure the motion of the golf club. The
accelerometers are mounted in the shaft of the golf club. Each measures the
acceleration along the axis of the shaft of the golf club. Interpreting the
measurement with the context of the double pendulum model of the golf swing, it
is useful to resolve the resulting signals into differential and common mode
components. The differential mode is a measure of the rotational kinetic energy
of the golf club, and this can be used to understand the tempo, rhythm, and
timing of the golf swing. The common mode measurement is related to the motion
of the hands. It is shown that both components can be used to recover the
motion of the swing within the context of the double pendulum model of the golf
swing.

8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat