# Two springs of force constants K1 and K2 (K1> K2) are stretched by same force. If W1 and W2 be the work done stretching the springs then - Physics

MCQ

Two springs of force constants K1 and K2 (K1> K2) are stretched by same force. If W1 and W2 be the work done stretching the springs then......

• W1=W2

• W1<W2

• W1>W2

• W1=W2=0

#### Solution

W1<W2

F1 = K1x1 and F2 = K2x2

Force is same

∴ K1x1=K2x2

∴x1<x2  ........(K1>K2)

Work done, W_1=1/2K_1x_1^2 and W_2=1/2K_2x_1^2

∴W1<W2  .........(K1>K2 and x1<x2)

Concept: Elastic Energy
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