Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Translational-Rotational Coupling during the Scattering of a Frictional
  Sphere from a Flat Surface   At a macroscopic level, concepts such as top spin, back spin and rolling are
commonly used to describe the collision of balls and surfaces. Each term refers
to an aspect of the coupling of rotational motion during the collision of a
spherical particle with a planar surface. In this paper we explore the
mechanisms of energy transfer involving the collision of a rotating sphere and
a surface using a model of frictional interactions developed for granular
material. We present explicit analytical treatments for the scattering and
derive expressions for two important limiting classes: energy conserving
collisions and collisions subject to rapid transverse dissipation.

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The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph