Four springs of force constants K1=1000N/m, K2=1500 N/m, K3=2500 N/m and K4=2000 N/m are subjected to different loads producing same extension. Arrange the springs with work done in descending order
(1) 1,2,3,4
(2) 3, 4, 1, 2
(3) 3, 2, 1, 4
(4) 3, 4, 2, 1
