Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Control of body motion in an ideal fluid using the internal mass and the
  rotor in the presence of circulation around the body   In this paper we study the controlled motion of an arbitrary two-dimensional
body in an ideal fluid with a moving internal mass and an internal rotor in the
presence of constant circulation around the body. We show that by changing the
position of the internal mass and by rotating the rotor, the body can be made
to move to a given point, and discuss the influence of nonzero circulation on
the motion control. We have found that in the presence of circulation around
the body the system cannot be completely stabilized at an arbitrary point of
space, but fairly simple controls can be constructed to ensure that the body
moves near the given point.

12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg