railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Shear Stress and Bending Stress
Which of the following is the correct expression for the bending equation in pure bending?
(Where M = Bending moment, I = Moment of inertia of the cross-section about the neutral axis, f = Bending stress at a distance y from the neutral axis, y = Distance from the neutral axis, E = Modulus of elasticity, and R = Radius of curvature of the beam)
1
\(\rm \frac{M}{I}=\frac{f}{y}=\frac{R}{E}\)
2
\(\rm \frac{I}{M}=\frac{f}{y}=\frac{E}{R}\)
3
\(\rm \frac{M}{I}=\frac{f}{y}=\frac{E}{R}\)
4
\(\rm \frac{M}{I}=\frac{y}{f}=\frac{E}{R}\)