A wire of cross section A is stretched horizontally between two clamps located 2 metres…
Physics · JEE Main · NTA Exams — Properties of Solids and Liquids
A wire of cross section A is stretched horizontally between two clamps located \(2 \ell\)metres apart. A weight W kg is Suspended from the mid-point of the wire. If the mid-point sags vertically through a distance x << 1 the strain produced is:
- \(\frac{2 \mathrm{x}^{2}}{\ell^{2}}\)
- \(\frac{x^{2}}{\ell^{2}}\)
- \(\frac{x^{2}}{2 \ell^{2}}\)
- None of these
Answer
(A) 2 x ^ 2 ^ 2
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