Two different sets of forcing systems are said to statically equivalent if,
(i) They produce same shear force and bending moment in a particular section.
(ii) They require same set of external forces to reduce each system to equilibrium.
(iii) They generate identical reactions with respect to direction and magnitude.
(iv) They produce same deflection in any given section of the beam.
Which of the above are true ?
1. (i) and (ii)
2. (ii) and (iii)
3. (i) and (iv)
4. (iii) and (iv)