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In the Figure, the negative bending moment at point A of the cantilever is ________ kNm.
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- 241 to 256
- 214 to 225
- 220 to 225
- 224 to 226
Correct Option: D
224 to 226
For a contilever beam lengt h ‘L’ carrying a concentrated load ‘W’ at its fixend, B. M.max = – (WL)
Here, due to point load B. M.max = (– WL) = (– 20 × 5) = – 100 kN.m.
For a contilever beam of length ‘L’ carrying on UDL ‘w’ over its entire spar B. M.max at fixed end = (WL²/2)
Here, due to UDLB, M.max = (WL²/2)
| = - 125 kN.m. | ||
| 2 |
Thus, total B.M. moment at point A (fixed end) = – 100 + (– 125) = – 225 kN.m.
