A block of mass 500g and specific heat 400j/kg k is attached with a spring of spring constant 800N/m. Now block is dipped in water of mass 1kg and specific heat 4184J/kgk. Now the spring is elongated by 2cm and released. Find rise in temperature of water and block system when block finaly comes to rest.
(1) 7.64 x 10-4K
(2) 3.64 x 10-3k
(3) 3.64 x 10-5k
(4) 3.36 x 10-6k