  The effect of an extended Cornell potential on mass spectra of heavy and
heavy-light mesons is studied. The Cornell potential is extended to include
quadratic potential and inverse quadratic potential. The N-radial Schrodinger
equation is solved by using series method. The results for charmonium and
bottomonium, and light-heavy meson masses are obtained. A comparison with other
recent works is discussed. The present results are improved in comparison with
other recent works and are in good agreement with experimental data.
