Y = (Force x L)/(A x l) = WL/Al
l = WL/AY
Due to the arrangement of the pulley, the length of wire is L/2 on each side and so the elongation will be l/2. For both sides elongation = l
Hence, the correct answer is option (b)
Y = (Force x L)/(A x l) = WL/Al
l = WL/AY
Due to the arrangement of the pulley, the length of wire is L/2 on each side and so the elongation will be l/2. For both sides elongation = l
Hence, the correct answer is option (b)