  We investigate the nuclear and the Coulomb contributions to the breakup cross
sections of $^6$Li in collisions with targets in different mass ranges.
Comparing cross sections for different targets at collision energies
corresponding to the same $E/V_{\mathrm{\scriptscriptstyle B}}$, we obtain
interesting scaling laws. First, we derive an approximate linear expression for
the nuclear breakup cross section as a function of $A_{\mathrm{%
\scriptscriptstyle T}}^{1/3}$. We then confirm the validity of this expression
performing CDCC calculations. Scaling laws for the Coulomb breakup cross
section are also investigated. In this case, our CDCC calculations indicate
that this cross section has a linear dependence on the atomic number of the
target. This behavior is explained by qualitative arguments. Our findings,
which are consistent with previously obtained results for higher energies, are
important when planning for experiments involving exotic weakly bound nuclei.
