Engineering Board Exam Reviewer · Strength of Materials · medium
A rectangular beam 170 mm wide and 340 mm deep is subjected to a bending moment of 50 kN· m. What is the maximum bending stress?
- 30.53
- 7.63
- 15.27
- 45.8
Answer
C. 15.27
Solution
max = Mc/I = 6M/(bh2) = 6(50 × 106 N· mm)/((170)(340)2) = 15.27 MPa.
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