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A simply supported beam of length 3L is subjected to the loading shown in the figure.
It is given that P = 1 N, L = 1 m and Young's modulus E = 200 GPa. The cross-section is a square with dimension 10 mm × 10 mm. The bending stress (in Pa) at the point A located at the top surface of the beam at the distance of 1.5 L from the left end is _______.
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- 0
- 1
- 2
- 3
Correct Option: A
RE = P/3N
RB = – P/3 N
| BMX=1.51 = | X - P(X - L) | 3 |
| = |  |  | - P | | - L | | = 0 | 3 | 2 | 2 |
BM = 0 0 = 0
