railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Shear Stress and Bending Stress
Which one of the following is correct?
(R is radius of curvature, M is bending moment)1
\(\frac{1}{R} = \frac{{{d^2}y}}{{d{x^2}}} = \frac{{EI}}{M}\)
2
\(\frac{1}{R} = \frac{{{d^2}y}}{{d{x^2}}} = \frac{M}{{EI}}\)
3
\(R = \frac{{{d^2}y}}{{d{x^2}}} = \frac{{EI}}{M}\)
4
\(R = \frac{{{d^2}y}}{{d{x^2}}} = \frac{{M}}{EI}\)