Engineering Board Exam Reviewer · Strength of Materials · easy
A rectangular beam section is 100 mm wide and 200 mm deep. What is its section modulus about the centroidal horizontal axis, in 103 mm3?
- 666.67
- 333.33
- 1333.33
- 2000
Answer
A. 666.67
Solution
S = I/c = bh2/6 = (100)(200)2/6 = 666666.67 mm3 = 666.67 × 103 mm3.
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