a wire is fixed at the upper end strecthes by length l by applying a force F the work done is strectly is a) f/2l b) fl c) 2fl d)fl/2
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1
Answer:
b
Explanation:
Force and streched length is in one direction
Answered by
2
Answer: Option (D)
Explanation:
Center of gravity=L/2
Work done=Force×displacement
Work done=Fl/2
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