Consider N identical masses connected through springs of same force constant k. The free ends of the coupled system are rigidly fixed at x=0 and x=L The
masses are made to execute longitudinal oscillations.
i) Depict the equilibrium configuration as well as instantaneous configuration.
ii) Derive the equation of wave motion.
iii) Calculate the velocity of wave when a force of 500 N acts on a system with mass per unit length 0.25 kg/m