  We solve the 2+1-dimensional Teukolsky equation numerically for the Weyl
scalars $\psi_0$ and $\psi_4$ along a time-like geodesic approaching the Cauchy
horizon of a rapidly rotating perturbed Kerr black hole. We find that both the
amplitude and frequency of the Weyl scalars agree with the results of linear
perturbation analysis. We then model a physical object by a simple damped
harmonic oscillator, which is driven by an external force that mimics the tidal
force experienced by the infalling object. We use this model to find the total
deformation of the object at the Cauchy horizon, and the resonant effect when
the driving force's frequency matches the internal frequency of the oscillator
that models the object.
