Global existence of a heavy ball model with a varying nonnegative friction

Hassan Mcheik, Zaynab Salloum

In this paper, we study a dissipative dynamical system non linear of second order $\ddot{x}(t)+\lambda (t)\dot{x}(t)+\nabla \Phi (x(t))=0,$ with the non-negative friction coefficient $λ\i…