state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Physics Mechanical Properties of Solids Applications of elastic behaviour of materials
A mild steel wire of length 2L and cross-sectional area A is stretched, well within elastic limit, horizontally between two pillars (Fig. 9.1). A mass m is suspended from the mid point of the wire. Strain in the wire is
1
\(\frac{x^2}{2L^2}\)
2
\(\frac{x}{L}\)
3
\(\frac{x^2}{L}\)
4
\(\frac{x^2}{2L}\)
5
Question Not Attempted