Question

The force constant of a wire is k and that of the another wire is 3k when both the wires are stretched through same distance, if work
done are W¹ and W² then:
(a) W2 =W1
(b) W2 =9W4
(c) W1=3 W2
(d) W2=3 W1​

Answer 1

Correct option: (D) W2 = 3W1 Explanation: Workdone = W = (1/2)Kx2 for both wires distance is same W ∝ K {(W1) / (W2)} = {(K1­) / (K2)} = {K / (3K)} = (1 / 3) W2 = 3W1