Engineering Board Exam Reviewer · Strength of Materials · medium
A cantilever beam 3 m long carries a uniformly distributed load of 8 kN/m over its full length. What is the maximum bending moment at the fixed support?
- 72
- 9
- 36
- 18
Answer
C. 36
Solution
The resultant load wL acts at the midpoint, so Mmax = (wL)(L/2) = wL2/2 = (8)(3)2/2 = 36 kN· m.
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