Topics to be sent 1-Complex number notation. 2-Steady state behaviour. 3-Two spring coupled masses. 4-Two coupled Lc circuits. 5-Three spring coupled masses. 6-Normal modes. 7-Atomic and lattice vibrations. 8-Normal modes. 9-General time of evaluation of uniform string. 10-Spring coupled masses. 11-Soumd waves in elastic solid. 12-Sound waves in ideal gas. Sar waves and oscillations ke liye topics ke notes kahan se Milenge