A metal block of density `6000 kg m^(-3)` and mass `1.2 kg` is respended throught a spring of spring constant `200Nm^(-1)` .The spring - block system is dipped in water kept in a vessel .The water has a mass of `250g` and the block is at a height `40cm` above the bottom of the vassel .If the support to the spring is broken , what will be the rise in the temperature of the water specific beat capacity of the block is `250J kg^(-1)K^(-1)` and that of water is `4200J kg^(-1)K^(-1)` Head capacities of the vessel and the spring are nogligible