  In a recent paper, Phys. Rev. Lett. 105 260601 (2010) [arXiv:1008.1421],
Andrade et al., argued that classical particles confined in a parabolic trap at
T=0 distribute themselves in accordance with the Tsallis statistics. To prove
their point the authors performed molecular dynamics simulations. Here we show
that the model of Andrade et al. can be solved exactly. The distribution of
particles at T=0 has nothing to do with the Tsallis entropy and is determined
simply by the force balance.
