  Using Monte Carlo simulations, we study the dynamic transitions in the
unzipping of an adsorbed homogeneous polymer on a surface (or wall). We
consider three different types of surfaces. One end of the polymer is always
kept anchored, and other end monomer is subjected to a periodic force with
frequency $\omega$ and amplitude $g_0$. We observe that the force-distance
isotherms show hysteresis loops in all the three cases. For all the three
cases, it is found that the area of the hysteresis loop, $A_{loop}$, scales as
$1/\omega$ in the higher frequency regime, and as $g_0^{\alpha} \omega^{\beta}$
with exponents $\alpha = 1$ and $\beta = 1.25$ in the lower frequency regime.
The values of exponents $\alpha$ and $\beta$ are similar to the exponents
obtained in the earlier Monte Carlo simulation studies of DNA chains and a
Langevin dynamics simulation study of longer DNA chains.
