  In brane world models, combining the extra dimensional field modes with the
standard four dimensional ones yields interesting physical consequences that
have been proved from high energy physics to cosmology. Even some low energy
phenomena have been considered along these lines to set bounds on the brane
model parameters. In this work we extend to the gravitational realm a previous
result which gave finite electromagnetic and scalar potentials and self
energies for a source looking pointlike to an observer sitting in a 4D
Minkowski subspace of the single brane of a Randall-Sundrum spacetime including
compact dimensions. We calculate here the gravitational field for the same type
of source by solving the linearized Einstein equations. Remarkably, it turns
out to be also non singular. Moreover, we use gravitational experimental
results of the Cavendish type and the Parameterized Post Newtonian (PPN)
coefficients, to look for admissible values of the brane model parameters. The
anti de Sitter radius hereby obtained is concordant with previous results based
on Lamb shift in hydrogen. However, the resulting PPN parameters lie outside
the acceptable value domain.
