Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kermit's What-Happens-Next-Machine Reloaded   If Kermit's What-Happens-Next-Machine had functioned, you would not have seen
much, because it would have gone too quickly. In this article it is shown that
putting up and solving the equations of motion of a seemingly simple mechanical
apparatus presents a challenging problem. The simulation can, however, be quite
instructive and also entertaining.

4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs