Two bodies of masses 1 kg and 3 kg respectively are connected rigidly by a vertcal spring. The body of mass 3 kg rests on a smototh horizontal surface. The force constant of the spring is `484Nm^(-1)`. From the equilibrium position, the mass of 1 kg is displaced vertically through a distance of 0.02 m and then released. calculate (i) and frequency of oscillation of the mass of 1 kg (ii) the maximum velocity of this mass (iii) its oscillation energy and (iv) the reaction of the table on the mass of 3 kg, when mass 1 kg is having harmonic oscillations.