A block attached to a spring, pulled by a constant horizontal force, is kept on a smooth surface as shown in the figure. Initially, the spring is in the natural state. Then the maximum positive work that the applied force F can do is: [Given that spring does not break]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Applying work energy theorem on block
W F + W S = 0
F λ – 
k λ 2 = 0 ∴ λ = 
or work done = F λ = 
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