Consider the following statements for simple bending of beams
1. Neutral axis always through the centroid of the beam cross – section
2. Bending stress on a fibre is a longitudinal stress
3. Bending stress is zero on the neutral axis
4. Shearing stress is always zero on the correct?
Which of the statements given above are correct?
(a) 1, 2 and 3 only (b) 1, 2, 3 and 4 (c) 2, 3 and 4 only (d) 1 and 4 only