A non-linear spring has a tensile force- deflection relationship given by F = 150x+500x where x is in meter and F, is in Newton. The acceleration of the 6 kg block at x = 200mm if it is released from rest is (Take g = 10 m/s) undeformed spring position wwwwww (A) 9.66 m/s (C) 5.33 m/s 6 kg Hg = 0.30 H = 0.25 (B) 2.89 m/s (D) 4.98 m/s