engineering recuitment NMDC Junior Officer (Trainee) Mock Test 2024 Strength of Materials Torsion of Shaft Effect on Shaft
Which of the following is an INCORRECT bending equation based on the theory of pure bending? where, M = Bending moment, I = Moment of inertia exerted on the bending axis, σ = stress of the fibre at a distance 'y' from neutral/centroidal axis, E = Young's Modulus of beam material, R = Curvature radius of this bent beam and Z = Section modulus of the section.
1
\(\frac{\sigma}{y}=\frac{E}{R}\)
2
M = ZI
3
\(\sigma=\frac{EY}{R}\)
4
\(M=\frac{EI}{R}\)