Question: A wire of length 𝐿 suspended vertically from a rigid support is made to suffer extension 𝑙 in its length by applying a force 𝐹. The work is
(A) \dfrac{Fl}{2}
(B) 𝐹𝑙
(C) 2𝐹𝑙
(D) 𝐹𝑙
Answer: Option (A)
Solution:
A wire of length 𝐿 suspended vertically from a rigid support is made to suffer extension 𝑙 in its length by applying a force 𝐹. The work is
with
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