state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Physics Mechanical Properties of Solids Elastic moduli
A lift of mass \( 'm' \) is connected to a rope which is moving upward with the maximum acceleration \( 'a' \). For maximum safe stress, the elastic limit of the rope is \( 'T' \). The minimum diameter of the rope is \( g \) (gravitational acceleration):
1
\( \left [\dfrac {2m(g + a)}{\pi T} \right ]^{\dfrac {1}{2}} \)
2
\( 2\left [\dfrac {m(g + a)}{\pi T} \right ]^{\dfrac {1}{2}} \)
3
\( \left [\dfrac {m(g + a)}{\pi T} \right ]^{\dfrac {1}{2}} \)
4
\( \left [\dfrac {m(g + a)}{2\pi T} \right ]^{\dfrac {1}{2}} \)
5
Question Not Attempted