Heavy-ion reactions offer unique opportunities for studying the properties of nuclei under extreme conditions.Moreover, by proper choice of projectile-target combination, one may also be able to produce nuclei which are very much away from the beta stability line, as well as the super heavy elements. The ultimate aim of any nuclear physics investigation continues to be understanding of the nature of nuclear force between two nucleons. Over the years, different probes at varying energies on different targets have been employed for these investigations. It analyses various systems at low energies and discusses the various forces involving in such type of interactions.