Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tidal interactions - crude body model in dynamical investigations   The paper presents results of investigations of small bodies dynamics in a
vicinity of giant planets. We used the most simple body model: gravitationally
bounded, rotating contact binary affected by the tidal force acting from a
planet. Spin variations of such binaries were extensively studied during
planetary close encounters. Two main types of dynamical behaviour were
observed: (i) huge but interim fluctuations of the angular velocity and (ii)
permanent changes of a rotation during a close approach. The first type is
observed mainly for fast rotators, while the second one was encountered in a
population of slowly spinning objects with periods longer than 12 hours.
Conclusions on usability of such crude physical body models in dynamical
investigations and a comparison to previous results were attached. The results
allow us to formulate a thesis explaining the phenomenon of creation of the
extremely slow rotators and an observational excess of such type of objects.

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The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin